Placeholder names are words that can refer to things or people whose names do not exist, are temporarily forgotten, are not relevant to the salient point at hand, are to avoid stigmatization, are unknowable/unpredictable in the context in which they are being discussed, or are otherwise de-emphasized whenever the speaker or writer is unable to, or chooses not to, specify precisely. Placeholder names for people are often terms referring to an average person or a predicted persona of a typical user.

Linguistic role

These placeholders typically function grammatically as

noun A noun () is a word that generally functions as the name of a specific object or set of objects, such as living creatures, places, actions, qualities, states of existence, or ideas.Example nouns for: * Living creatures (including people, alive, ...

s and can be used for people (e.g. '' John Doe, Jane Doe''), objects (e.g. '' widget''), locations ("Main Street"), or places (e.g. ''Anytown, USA''). They share a property with

pronoun In linguistics and grammar, a pronoun ( abbreviated ) is a word or a group of words that one may substitute for a noun or noun phrase. Pronouns have traditionally been regarded as one of the parts of speech, but some modern theorists would not ...

s, because their referents must be supplied by context; but, unlike a pronoun, they may be used with no referent—the important part of the communication is not the thing nominally referred to by the placeholder, but the context in which the placeholder occurs. In their ''Dictionary of American Slang'' (1960), Stuart Berg Flexner and Harold Wentworth use the term ''kadigan'' for placeholder words. They define "kadigan" as a synonym for ''thingamajig''. The term may have originated with Willard R. Espy, though others, such as David Annis, also used it (or ''cadigans'') in their writing. Its

etymology Etymology () The New Oxford Dictionary of English (1998) – p. 633 "Etymology /ˌɛtɪˈmɒlədʒi/ the study of the class in words and the way their meanings have changed throughout time". is the study of the history of the form of words ...

is obscure—Flexner and Wentworth related it to the generic word ''gin'' for

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power ...

(as in the ''

cotton gin A cotton gin—meaning "cotton engine"—is a machine that quickly and easily separates cotton fibers from their seeds, enabling much greater productivity than manual cotton separation.. Reprinted by McGraw-Hill, New York and London, 1926 (); a ...

''). It may also relate to the Irish

surname In some cultures, a surname, family name, or last name is the portion of one's personal name that indicates one's family, tribe or community. Practices vary by culture. The family name may be placed at either the start of a person's full name ...

''Cadigan''. Hypernyms (words for generic categories; e.g., "flower" for tulips and

rose A rose is either a woody perennial flowering plant of the genus ''Rosa'' (), in the family Rosaceae (), or the flower it bears. There are over three hundred species and tens of thousands of cultivars. They form a group of plants that can be ...

s) may also be used in this function of a placeholder, but they are not considered to be kadigans.

Examples

Placeholder words exist in a highly informal

register Register or registration may refer to: Arts entertainment, and media Music * Register (music), the relative "height" or range of a note, melody, part, instrument, etc. * ''Register'', a 2017 album by Travis Miller * Registration (organ), th ...

of the English language. In formal speech and writing, words like ''accessory'', ''paraphernalia'', '' artifact'', '' instrument'', or '' utensil'' are preferred; these words serve substantially the same function, but differ in connotation. Most of these words can be documented in at least the 19th century.

Edgar Allan Poe Edgar Allan Poe (; Edgar Poe; January 19, 1809 – October 7, 1849) was an American writer, poet, editor, and literary critic. Poe is best known for his poetry and short stories, particularly his tales of mystery and the macabre. He is wid ...

wrote a short story entitled "The Literary Life of Thingum Bob, Esq.", showing that particular form to be in familiar use in the United States in the 1840s. In

Gilbert and Sullivan Gilbert and Sullivan was a Victorian era, Victorian-era theatrical partnership of the dramatist W. S. Gilbert (1836–1911) and the composer Arthur Sullivan (1842–1900), who jointly created fourteen comic operas between 1871 and 1896, of which ...

's ''

The Mikado ''The Mikado; or, The Town of Titipu'' is a comic opera in two acts, with music by Arthur Sullivan and libretto by W. S. Gilbert, their ninth of fourteen operatic collaborations. It opened on 14 March 1885, in London, where it ran at the ...

'', W. S. Gilbert makes the Lord High Executioner sing of a "little list" which includes:

... apologetic statesmen of a compromising kind,
Such as: What d'ye call him: Thing'em-bob, and likewise: Never-mind,
and 'St: 'st: 'st: and What's-his-name, and also You-know-who:
The task of filling up the blanks I'd rather leave to you.

Some fields have their own specific placeholder terminology. For example, " widget" in economics, engineering and electronics, or "

Blackacre Blackacre, Whiteacre, Greenacre, Brownacre, and variations are the placeholder names used for fictitious estates in land. The names are used by professors of law in common law jurisdictions, particularly in the area of real property and occasion ...

" and "

John Doe John Doe (male) and Jane Doe (female) are multiple-use placeholder names that are used when the true name of a person is unknown or is being intentionally concealed. In the context of law enforcement in the United States, such names are ofte ...

" or "Jane Doe" in law. "

X-ray An X-ray, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic radiation. Most X-rays have a wavelength ranging from 10 picometers to 10 nanometers, corresponding to frequencies in the range 30&nb ...

" was originally a placeholder name for an unexplained phenomenon.

Companies and organizations

* "Ace" and "Acme" were popular in company names as positioning words in alphabetical directories. They were generic, laudatory of whatever products they were used to promote and appeared at the beginning of most alpha-sorted lists. ("Acme" is a regular English word from the

Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic pe ...

, meaning summit, highest point, extremity or peak, and thus sometimes used for "best".) A well-known example of "Acme" as a placeholder name is the Acme Corporation whose products are often seen in the Wile E. Coyote and the Road Runner cartoons. * "Mom and Pop" (in the United States) are occasional placeholders for the individual owners of a generic small family-owned business * High Street (UK) or Main Street (US) for the business district of a small town or village, often contrasted as a commercial business entity against Threadneedle Street,

City of London The City of London is a city, ceremonial county and local government district that contains the historic centre and constitutes, alongside Canary Wharf, the primary central business district (CBD) of London. It constituted most of London f ...

in the UK or

Wall Street Wall Street is an eight-block-long street in the Financial District of Lower Manhattan in New York City. It runs between Broadway in the west to South Street and the East River in the east. The term "Wall Street" has become a metonym for ...

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

in America. * "Advent corporation" is a term used by lawyers to describe an as yet unnamed corporation, while legal incorporation documents are being prepared. In the case of Advent Corporation, founder Henry Kloss decided to adopt this placeholder name as the formal legal name of his new company. * " NewCo" or "Newco" is used in a similar way in the UK for an as-yet-unnamed company. * Fictional brands such as Morley are often used in television and cinema as placeholders to avoid unintended

product placement Product placement, also known as embedded marketing, is a marketing technique where references to specific brands or products are incorporated into another work, such as a film or television program, with specific promotional intent. Much of th ...

. "Brand X" has been used in television advertisements as a

generic brand Generic brands of consumer products (often supermarket goods) are distinguished by the absence of a brand name, instead identified solely by product characteristics and identified by plain, usually black-and-white packaging. Generally they imitat ...

representing any other brand than the one being advertised. * "XYZ Widget Company" has long been used in business and economics textbooks as a sample company. Also used as engraving text example on items such as plaques, trophy plates, etc. Occasionally appears on customizable promotional materials including stationery templates, business cards, advertising signage, cups, backpacks, and other "swag" samples. * "Contoso" and previously "Northwind" are used as fictional businesses in

Microsoft Microsoft Corporation is an American multinational technology corporation producing computer software, consumer electronics, personal computers, and related services headquartered at the Microsoft Redmond campus located in Redmond, Washi ...

's training materials and documentation. * "

Oceanic Airlines Oceanic Airlines, and less frequently, Oceanic Airways, is the name of a fictional airline used in several films, television programs, and comic books—typically works that feature plane crashes and other aviation disasters, with which a real ...

" is used as a

fictional Fiction is any creative work, chiefly any narrative work, portraying individuals, events, or places that are imaginary, or in ways that are imaginary. Fictional portrayals are thus inconsistent with history, fact, or plausibility. In a tradit ...

airline An airline is a company that provides air transport services for traveling passengers and freight. Airlines use aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements, in wh ...

in several films, TV programmes, and comic books, typically when it is involved in a disaster or another event with which actual airlines would prefer not to be associated. * "

Octan Lego City is a theme under which Lego building sets are released based on city life, with the models depicting city and emergency services (such as police and fire), airport, train, construction, and civilian services. Legoland Town is one of th ...

" is used by

The Lego Group Lego A/S (trade name: The Lego Group) is a Danish toy production company based in Billund, Denmark. It manufactures Lego-brand toys, consisting mostly of interlocking plastic bricks. The Lego Group has also built several amusement parks aroun ...

as a fictional oil company. Before 1992, they used real life oil companies

Shell Oil Shell plc is a British multinational oil and gas company headquartered in London, England. Shell is a public limited company with a primary listing on the London Stock Exchange (LSE) and secondary listings on Euronext Amsterdam and the New ...

Exxon ExxonMobil Corporation (commonly shortened to Exxon) is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller's Standard Oil, and was formed on November 3 ...

and

Esso Esso () is a trading name for ExxonMobil. Originally, the name was primarily used by its predecessor Standard Oil of New Jersey after the breakup of the original Standard Oil company in 1911. The company adopted the name "Esso" (the phonetic ...

Computing

Placeholder names are commonly used in

computing Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorithmic processes, and development of both hardware and software. Computing has scientific, ...

: * Foo, Bar, Baz, and Qux (and combinations thereof) are commonly used as placeholders for file, function and variable names. Foo and bar are derived from foobar. * Hacker slang includes a number of placeholders, such as '' frob'' which may stand for any small piece of equipment. ''To frob'', likewise, means to do something to something. In practice it means to adjust (a device) in an aimless way. * Alice and Bob, alternatives for 'Person A'/'Person B' when describing processes in telecommunications; in cryptography Eve (the eavesdropper) is also added. * ''J. Random'' X (e.g. '' J. Random Hacker'', ''J. Random User'') is a term used in computer jargon for a randomly selected member of a set, such as the set of all users. Sometimes used as ''J. Random Loser'' for any not-very-computer-literate user. * ''Johnny/Jane Appleseed'', commonly used as a placeholder name by

Apple An apple is an edible fruit produced by an apple tree (''Malus domestica''). Apple trees are cultivated worldwide and are the most widely grown species in the genus '' Malus''. The tree originated in Central Asia, where its wild ancest ...

Domain names

Certain

domain name A domain name is a string that identifies a realm of administrative autonomy, authority or control within the Internet. Domain names are often used to identify services provided through the Internet, such as websites, email services and more. As ...

s in the format

example Example may refer to: * '' exempli gratia'' (e.g.), usually read out in English as "for example" * .example The name example is reserved by the Internet Engineering Task Force (IETF) as a domain name that may not be installed as a top-level ...

.tld (such as ''example.com'', ''example.net'', and ''example.org'') are officially reserved as placeholders for the purpose of presentation. Various example

reserved IP addresses In the Internet addressing architecture, the Internet Engineering Task Force (IETF) and the Internet Assigned Numbers Authority (IANA) have reserved various Internet Protocol (IP) addresses for special purposes. IPv4 IPv4 designates special usa ...

exist in

IPv4 Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based internetworking methods in the Internet and other packet-switched networks. IPv4 was the first version d ...

and

IPv6 Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. I ...

, such as in IPv4 documentation and in IPv6 documentation.

Geographical locations

Placeholders such as ''Main Street'', ''Your County'', and ''Anytown'' are often used in sample mailing addresses. ''

Ruritania Ruritania is a fictional country, originally located in central Europe as a setting for novels by Anthony Hope, such as ''The Prisoner of Zenda'' (1894). Nowadays the term connotes a quaint minor European country, or is used as a placeholder name f ...

'' is commonly used as a placeholder country.

Acacia Avenue Acacia Avenue is a cliché in British culture. It is a placeholder name for an unexceptional middle-class suburban street. There are at least sixty Acacia Avenues in the United Kingdom, nine of them within Greater London. In Canada, the residen ...

has been used as shorthand for an average suburban residential street in Britain. ''Something'' -stan, where ''something'' is often

profanity Profanity, also known as cursing, cussing, swearing, bad language, foul language, obscenities, expletives or vulgarism, is a socially offensive use of language. Accordingly, profanity is language use that is sometimes deemed impolite, rud ...

, is commonly used as a placeholder for a

Middle Eastern The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabia (including the Arabian Peninsula and Bahrain), Asia Minor (Asian part of Turkey except Hatay Province), East Thrace (Europea ...

South Asian South Asia is the southern subregion of Asia, which is defined in both geographical and ethno-cultural terms. The region consists of the countries of Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka.;;;;;;;; ...

country or for a politically disliked portion of one's own country. Example – ''Carjackastan'' for a place with high rates of automobile theft. ''

Timbuktu Timbuktu ( ; french: Tombouctou; Koyra Chiini: ); tmh, label=Tuareg, script=Tfng, ⵜⵏⴱⴾⵜ, Tin Buqt a city in Mali, situated north of the Niger River. The town is the capital of the Tombouctou Region, one of the eight administrativ ...

'', which is also a real city in the country of Mali, is often used to mean a place that is far away, in the middle of nowhere, or exotic. '' Podunk'' is used in

American English American English, sometimes called United States English or U.S. English, is the set of varieties of the English language native to the United States. English is the most widely spoken language in the United States and in most circumstances ...

for a hypothetical small town regarded as typically dull or insignificant, a place in the U.S. that is unlikely to have been heard of. Another example is ''East Cupcake'' to refer to a generic small town in the

Midwestern United States The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of the United States. I ...

. Similarly, ''the boondocks'' or ''the boonies'' are used in American English to refer to very rural areas without many inhabitants. In

New Zealand English New is an adjective referring to something recently made, discovered, or created. New or NEW may refer to: Music * New, singer of K-pop group The Boyz Albums and EPs * ''New'' (album), by Paul McCartney, 2013 * ''New'' (EP), by Regurgitator ...

, '' Woop Woops'' (or, alternatively, ''Wop-wops'') is a (generally humorous) name for an out-of-the-way location, usually rural and sparsely populated. The similar

Australian English Australian English (AusE, AusEng, AuE, AuEng, en-AU) is the set of varieties of the English language native to Australia. It is the country's common language and ''de facto'' national language; while Australia has no official language, Eng ...

''Woop Woop'', (or, less frequently, ''Woop Woops'') can refer to any remote location, or outback town or district. Another New Zealand English term with a similar use is Waikikamukau ("Why kick a moo-cow"), a generic name for a small rural town. In

British English British English (BrE, en-GB, or BE) is, according to Oxford Dictionaries, "English as used in Great Britain, as distinct from that used elsewhere". More narrowly, it can refer specifically to the English language in England, or, more broadl ...

, ''

Bongo Bongo Land In British English, Bongo Bongo Land (or Bongo-bongo Land) is a pejorative term used to refer to Third World countries, particularly in Africa, or to a fictional such country. Possible origins The origin of the term is unclear but it may come fr ...

'' (or ''Bongo-bongo'' Land) is a pejorative term used to refer to

Third World The term "Third World" arose during the Cold War to define countries that remained non-aligned with either NATO or the Warsaw Pact. The United States, Canada, Japan, South Korea, Western European nations and their allies represented the " First ...

countries, particularly in Africa, or to a fictional such country.

Legal

* In ancient Roman law, the names Aulus Agerius and Numerius Negidius were used to represent the plaintiff and the defendant. The names were both wordplays, respectively meaning " set in motion" and " refuse to pay". The model instruction to judges for civil suits began with ''si paret Numerium Negidium Aulo Agerio sestertium decem milia dare oportere'', meaning "if tappears that Numerius Negidius ought to pay Aulus Agerius ten thousand

sesterces The ''sestertius'' (plural ''sestertii''), or sesterce (plural sesterces), was an Ancient Rome, ancient Roman Roman currency, coin. During the Roman Republic it was a small, silver coin issued only on rare occasions. During the Roman Empire it w ...

...". *In the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

and

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by to ...

, ''

'' and the variations ''Jane Doe'' (for females) and John Roe or Richard Roe (for a second party): used in legal action and cases when the true identity of a person is unknown or must be withheld for legal reasons. ''Jane Roe'' was used for the then-unidentified plaintiff ( Norma Leah McCorvey) in one of the most famous legal cases in United States history, ''

Roe v. Wade ''Roe v. Wade'', 410 U.S. 113 (1973),. was a landmark decision of the U.S. Supreme Court in which the Court ruled that the Constitution of the United States conferred the right to have an abortion. The decision struck down many federal and st ...

''. These parties also appear in the

legal fiction A legal fiction is a fact assumed or created by courts, which is then used in order to help reach a decision or to apply a legal rule. The concept is used almost exclusively in common law jurisdictions, particularly in England and Wales. Deve ...

s of the action in

ejectment Ejectment is a common law term for civil action to recover the possession of or title to land. It replaced the old real actions and the various possessory assizes (denoting county-based pleas to local sittings of the courts) where boundary dis ...

, which was the usual proceeding to quiet title to

real property In English common law, real property, real estate, immovable property or, solely in the US and Canada, realty, is land which is the property of some person and all structures (also called improvements or fixtures) integrated with or aff ...

under common law pleading. * '' Mopery'': used in informal legal discussions as a placeholder for some infraction, when the exact nature of the infraction is not important. * ''

'' and its neighbors ''Whiteacre'', ''Greenacre'', ''Brownacre'', ''Greyacre'', ''Pinkacre'', etc. are used as placeholders for parcels of real property, usually on Law School examinations and the several State Bar Exams. They are sometimes located in ''Acre County'' in the fictional

State of Franklin The State of Franklin (also the Free Republic of Franklin or the State of Frankland)Landrum, refers to the proposed state as "the proposed republic of Franklin; while Wheeler has it as ''Frankland''." In ''That's Not in My American History Boo ...

. * ''Fnu Lnu'' is used by authorities to identify unknown suspects, the name being an

acronym An acronym is a word or name formed from the initial components of a longer name or phrase. Acronyms are usually formed from the initial letters of words, as in ''NATO'' (''North Atlantic Treaty Organization''), but sometimes use syllables, as ...

for ''First Name Unknown, Last Name Unknown''. If a person's first name is known but not the last, they may be called "John Lnu" or "Fnu Doe", and an unidentified person may be "Fnu Lnu". For example, a former interpreter for the

military A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct ...

was charged as "FNU LNU", and a

mute Muteness is a speech disorder in which a person lacks the ability to speak. Mute or the Mute may also refer to: Arts and entertainment Film and television * ''Mute'' (2005 film), a short film by Melissa Joan Hart * ''Mute'' (2018 film), a scien ...

man whose identity could not be determined was arrested and charged with burglary in

Harris County, Texas Harris County is a county located in the U.S. state of Texas; as of the 2020 census, the population was 4,731,145, making it the most populous county in Texas and the third most populous county in the United States. Its county seat is Houston, ...

under the name "FNU-LNU" (charges were later dropped because authorities could not communicate with the man). Fnu-Lnu conjunctions may also be used if the person has only a single name, as in Indonesian names. The name has been considered a source of humor when "Fnu Lnu" has been mistaken for the actual name of a person.

Medicine

* St. Elsewhere is often used as a placeholder name for any regional hospital or other care facility from which an admitted patient was referred. The medical slang is honored in the name of the 1980s television show of the same name. * GOMER (''g''et ''o''ut of ''m''y ''e''mergency ''r''oom) is a name in medical slang for any patient who continually uses emergency room services for non-emergency conditions; its use is informal and

pejorative A pejorative or slur is a word or grammatical form expressing a negative or a disrespectful connotation, a low opinion, or a lack of respect toward someone or something. It is also used to express criticism, hostility, or disregard. Sometimes, a ...

. * Element names from the

periodic table The periodic table, also known as the periodic table of the (chemical) elements, is a rows and columns arrangement of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of ch ...

are used in some hospitals as a placeholder for patient names, ex. Francium Male.

Military

Often used in example names and addresses to indicate to the serviceman where to put his own details. * '' Tommy Atkins'', the generic name for a soldier of the British Army. Also, colloquially, Bill Oddie,

rhyming slang Rhyming slang is a form of slang word construction in the English language. It is especially prevalent among Cockneys in England, and was first used in the early 19th century in the East End of London; hence its alternative name, Cockney rhymi ...

on the nickname 'squaddie'. * In the US Army and Air Force, Private (or Airman) Tentpeg and Snuffy are commonly used in examples (to explain various procedures) or cautionary tales. In the Marine Corps, Lance Corporal Schmuckatelli serves the same purpose. * In the US Coast Guard, a generic Coast Guardsman is referred to as Joe Coastie (or Jane). * In the Coast Guard, Navy, and Marines, a hypothetical member who has his act together is A.J. Squared-Away. * In the Canadian Armed Forces, the generic name for a soldier is Private/Corporal/rank Bloggins * In the

British Army The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurkha ...

, the fictional Loamshire Regiment is used as a placeholder to provide examples for its procedures such as addressing mail or specimen charges for violations of military law.

Numbers

* ''Umpteen'' is any annoyingly large number, as in the phrase "for the umpteenth time". * Placeholder telephone numbers are often allocated from ranges such as

555 Year 555 ( DLV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 555 for this year has been used since the early medieval period, when the Anno Domini calendar era became the p ...

(where +1-areacode-555-1212 is reserved in North America for directory assistance applications) to avoid generating misdialled calls to working numbers. In the United Kingdom,

Ofcom The Office of Communications, commonly known as Ofcom, is the government-approved regulatory and competition authority for the broadcasting, telecommunications and postal industries of the United Kingdom. Ofcom has wide-ranging powers acros ...

has set aside a range of numbers in larger geographic area codes, as well as fictional area code 01632 (0632 having been the code for

Newcastle upon Tyne Newcastle upon Tyne ( RP: , ), or simply Newcastle, is a city and metropolitan borough in Tyne and Wear, England. The city is located on the River Tyne's northern bank and forms the largest part of the Tyneside built-up area. Newcastle is ...

until replaced by 091 in the 1980s), for dramatic use. * Common placeholders for

postcode A postal code (also known locally in various English-speaking countries throughout the world as a postcode, post code, PIN or ZIP Code) is a series of letters or numerical digit, digits or both, sometimes including spaces or punctuation, includ ...

s in Canada include A1A 1A1 (a real postal code for Lower Battery Road, St. John's, Newfoundland) and K1A 0B2 (

Canada Post Canada Post Corporation (french: Société canadienne des postes), trading as Canada Post (french: Postes Canada), is a Crown corporation that functions as the primary postal operator in Canada. Originally known as Royal Mail Canada (the operat ...

Place in

Ottawa Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the c ...

). H0H 0H0 is reserved by Canada Post for fictional use (specifically for the mythical

Santa's workshop Santa's Workshop is the legendary workshop where Santa Claus and his elves are said to live and make the toys and presents given out at Christmas. The exact "location" of Santa's workshop varies depending upon local culture. There are at least ei ...

). In the United States, the ZIP Code 90210 (from TV series

Beverly Hills 90210 ''Beverly Hills, 90210'' (often referred to by its short title, ''90210'') is an American teen drama television series created by Darren Star and produced by Aaron Spelling under his production company Spelling Television. The series ran for ...

) is frequently used. Numeric codes with repeated or sequential digits like 12345 (a

General Electric General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable ene ...

plant in

Schenectady, New York Schenectady () is a city in Schenectady County, New York, United States, of which it is the county seat. As of the 2020 census, the city's population of 67,047 made it the state's ninth-largest city by population. The city is in eastern New Yo ...

), or 99999-9999 (unused but in a prefix range for the vicinity of Ketchikan, Alaska) may also appear. 00000, which lies in an unused prefix range, can be used without confusion. * In computing, some magic numbers (and other uses of hexadecimal numbers) apply hexspeak to create memorable hexadecimal values.

People

Joe Bloggs "Joe Bloggs" and "Fred Bloggs" are placeholder names used primarily in the United Kingdom to represent the average man on the street. It is used by students, on standardized test preparation courses, to represent the average test-taker. Many coun ...

* John/Jane Doe * Joe Schmoe *

Tom, Dick and Harry The phrase "Tom, Dick, and Harry" is a placeholder for unspecified people. The phrase most commonly occurs as "every Tom, Dick, and Harry", meaning ''everyone'', and "any Tom, Dick, or Harry", meaning ''anyone'', although ''Brewer's Dictionary o ...

* Jane Smith *

So-and-so So and so may refer to: * So and so (or "so & so"), a placeholder name used for someone who is unspecified, unknown or whose name is forgotten. * So and so (or "so & so"), a euphemism for an offensive or pejorative term, used in reference to a per ...

* What's-their-name or what's-their-face, for a person whose name is momentarily forgotten ** Examples (declension): what's-their-name, whatstheirname, what's-their-face, whatstheirface, what's-his-face, whatshisface, what's-his-name, whatshisname, what's-her-face, whatsherface, what's-her-name, whatshername

Science

In chemistry, tentatively discovered or hypothetical elements were assigned provisional names until their existence confirmed. They were created using the prefix ''eka-'' . For example, eka-

manganese Manganese is a chemical element with the Symbol (chemistry), symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of ...

was the placeholder name for technetium, a neighbor of manganese in group 7. See

Mendeleev's predicted elements Dmitri Mendeleev published a periodic table of the chemical elements in 1869 based on properties that appeared with some regularity as he laid out the elements from lightest to heaviest. When Mendeleev proposed his periodic table, he noted gaps in ...

for details. Similarly, the name " unobtainium" is frequently used for a material of highly desired characteristics which does not exist or which would be prohibitively expensive to mine, procure or synthesize.

Spoken and written language

* Lorem ipsum: Simulated text used to fill in for written content in a

page layout In graphic design, page layout is the arrangement of visual elements on a page. It generally involves organizational principles of composition to achieve specific communication objectives. The high-level page layout involves deciding on the ...

design

References

* Espy, W., ''An Almanac of Words at Play'' (Clarkson Potter, 1979) * Flexner, S. B. and Wentworth, H., ''A Dictionary of American Slang''; (Macmillan, 1960) * Watson, Ian, "Meet John Doe: stand-ins", section 3.7 i
IanWatson.org
''Cognitive Design'', (Ph.D. dissertation,

Rutgers University Rutgers University (; RU), officially Rutgers, The State University of New Jersey, is a public land-grant research university consisting of four campuses in New Jersey. Chartered in 1766, Rutgers was originally called Queen's College, and was ...

, 2005). {{DEFAULTSORT:Placeholder Name