Tetraphobia () is the practice of avoiding instances of the digit . It is a
superstition
A superstition is any belief or practice considered by non-practitioners to be irrational or supernatural, attributed to fate or magic (supernatural), magic, perceived supernatural influence, or fear of that which is unknown. It is commonly app ...
most common in
East Asia
East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...
n nations and is associated with death.
Rationale
The
Chinese word for "four" (,
pinyin
Hanyu Pinyin, or simply pinyin, officially the Chinese Phonetic Alphabet, is the most common romanization system for Standard Chinese. ''Hanyu'' () literally means 'Han Chinese, Han language'—that is, the Chinese language—while ''pinyin' ...
: sì,
jyutping
The Linguistic Society of Hong Kong Cantonese Romanization Scheme, also known as Jyutping, is a romanisation system for Cantonese developed in 1993 by the Linguistic Society of Hong Kong (LSHK).
The name ''Jyutping'' (itself the Jyutping ro ...
: sei
3) sounds quite similar to the word for "
death
Death is the end of life; the irreversible cessation of all biological functions that sustain a living organism. Death eventually and inevitably occurs in all organisms. The remains of a former organism normally begin to decompose sh ...
" (,
pinyin
Hanyu Pinyin, or simply pinyin, officially the Chinese Phonetic Alphabet, is the most common romanization system for Standard Chinese. ''Hanyu'' () literally means 'Han Chinese, Han language'—that is, the Chinese language—while ''pinyin' ...
: sǐ,
jyutping
The Linguistic Society of Hong Kong Cantonese Romanization Scheme, also known as Jyutping, is a romanisation system for Cantonese developed in 1993 by the Linguistic Society of Hong Kong (LSHK).
The name ''Jyutping'' (itself the Jyutping ro ...
: sei
2) in many
varieties of Chinese
There are hundreds of local Chinese language varieties forming a branch of the Sino-Tibetan languages, Sino-Tibetan language family, many of which are not Mutual intelligibility, mutually intelligible. Variation is particularly strong in the m ...
. Similarly, the
Sino-Japanese,
Sino-Korean and
Sino-Vietnamese words for "four", shi (し,
Japanese) and sa (사,
Korean), sound similar or identical to "death" in each language (see
Korean numerals
The Korean language has two regularly used sets of numerals: a native Korean system and Sino-Korean system. The native Korean number system is used for general counting, like counting up to 99. It is also used to count people, hours, object ...
,
Japanese numerals The are numerals that are used in Japanese. In writing, they are the same as the Chinese numerals, and large numbers follow the Chinese style of grouping by 10,000. Two pronunciations are used: the Sino-Japanese () readings of the Chinese char ...
,
Vietnamese numerals
Historically Vietnamese has two sets of numbers: one is etymologically native Vietnamese; the other uses Sino-Vietnamese vocabulary. In the modern language the native Vietnamese vocabulary is used for both everyday counting and mathematical pur ...
). Tetraphobia is known to occur in Korea and Japan since the two words sound identical, but not at all in Vietnam because they carry different
tones (in the case of the word for "four", whether it is the Sino-Vietnamese reading ''tứ'' or the more common non-Sino-Vietnamese reading ''tư'', neither sounds like the word for "death" which is ''tử'') and Vietnamese nor use Sino-Vietnamese numerals as often in the first place.
Tetraphobia far surpasses
triskaidekaphobia (Western superstitions around the number 13). It even permeates the business world in these regions of Asia.
Cultural examples by regions
In Mainland China
Chinese is a tonal language with a comparatively small inventory of permitted syllables, resulting in an exceptionally large number of
homophone
A homophone () is a word that is pronounced the same as another word but differs in meaning or in spelling. The two words may be spelled the same, for example ''rose'' (flower) and ''rose'' (past tense of "rise"), or spelled differently, a ...
words. Many of the numbers are homophones or near-homophones of other words and have therefore acquired superstitious meanings.
The Chinese avoid phone numbers and addresses with fours because the pronunciation in "four" and "death" differ only in tone, especially when a combination with another number sounds similar to undesirable expressions. Example: "94" could be interpreted as "certain death"
The tetraphobia is not apparent for the military and government institutions of the
People's Republic of China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
.
Chinese Communist Party
The Communist Party of China (CPC), also translated into English as Chinese Communist Party (CCP), is the founding and One-party state, sole ruling party of the People's Republic of China (PRC). Founded in 1921, the CCP emerged victorious in the ...
and
People's Liberation Army
The People's Liberation Army (PLA) is the military of the Chinese Communist Party (CCP) and the People's Republic of China (PRC). It consists of four Military branch, services—People's Liberation Army Ground Force, Ground Force, People's ...
make free use of the number 4 in many military designations for equipment, with examples including the
Dongfeng-4 ICBM,
Type 094 submarine, and
Type 054A frigate
The Type 054A (NATO/ OSD Jiangkai II) is a Ship class, class of guided-missile frigate from the People's Republic of China. It is a development of the Type 054 frigate; compared to its predecessor, the Type 054A has medium-range air defense capa ...
. Chinese government policies also usually contain the number 4 for expression.
By contrast, the navies of the
Republic of China
Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...
(Taiwan) and of
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
refrain from using the number 4 when assigning
pennant number
In the Royal Navy and other navies of Europe and the Commonwealth of Nations, ships are identified by pennant number (an internationalisation of ''pendant number'', which it was called before 1948). Historically, naval ships flew a flag that iden ...
s to their ships.
While in
Mandarin
Mandarin or The Mandarin may refer to:
Language
* Mandarin Chinese, branch of Chinese originally spoken in northern parts of the country
** Standard Chinese or Modern Standard Mandarin, the official language of China
** Taiwanese Mandarin, Stand ...
-speaking regions in China, 14 and 74 are considered unluckier than the individual 4, because 14 (十四, pinyin: shí sì) sounds like "is dead" (是死, shì sǐ). Additionally, in some forms of the language, 1 is pronounced as (幺, yāo), which sounds like (yào 要), which means "to want"; therefore, when combined with (四, sì), it sounds like "want death" (要死, yào sì). Likewise, 74 (七十四, pinyin: qī shí sì or colloquially 七四, pinyin: qī sǐ) sounds like "actually dead" (其实死, pinyin: qí shí sǐ) or "angered to death" (气死, pinyin: qì sǐ).
When
Beijing
Beijing, Chinese postal romanization, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's List of national capitals by population, most populous national capital city as well as ...
lost its bid to stage the
2000 Olympic Games
The 2000 Summer Olympics, officially the Games of the XXVII Olympiad, officially branded as Sydney 2000, and also known as the Games of the New Millennium, were an international multi-sport event held from 15 September to 1 October ...
, it was speculated that the reason China did not pursue a bid for the following
2004 Games was the unpopularity of the number 4 in China. Instead, the city waited another four years, and would eventually host the
2008 Olympic Games
The 2008 Summer Olympics (), officially the Games of the XXIX Olympiad () and officially branded as Beijing 2008 (), were an international multisport event held from 8 to 24 August 2008, in Beijing, China. A total of 10,942 athletes fr ...
, the number eight being a lucky number in Chinese culture.
In recent years China has also avoided using the number 4 in aircraft registrations. An example is China Southern Airlines, with their A330s. One A330 is registered as B-8363, while the next is B-8365 and following B-8366. After B-8366 there is B-1062, B-1063 then B-1065, to avoid using the number 4 as in B-8364 and 1064. However, this policy only applies for aircraft that end with 4, so one will see B-8426 but not B-8264.
In Hong Kong
In
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
, some apartments such as Vista Paradiso and
The Arch skip all the floors from 40 to 49, which is the entire 40s. Immediately above the 39th floor is the 50th floor, leading many who are not aware of tetraphobia to believe that some floors are missing. Tetraphobia is not the main reason, but rather as an excuse to have apartments with 'higher' floors, thus increasing the price, because higher floors in Hong Kong apartments are usually more expensive (see
39 Conduit Road). For
Cantonese
Cantonese is the traditional prestige variety of Yue Chinese, a Sinitic language belonging to the Sino-Tibetan language family. It originated in the city of Guangzhou (formerly known as Canton) and its surrounding Pearl River Delta. While th ...
speakers, 14 and 24 are considered unluckier than the individual 4, because 14 () sounds like "will certainly die" (, ), and 24 () sounds like "easy to die" (, ).
Due to the blending of East Asian and Western cultures, it is possible in some buildings that both the
thirteenth floor
Triskaidekaphobia ( , ; ) is fear or avoidance of the number . It is also a reason for the fear of Friday the 13th, called ''paraskevidekatriaphobia'' () or ''friggatriskaidekaphobia'' ( and ).
The term was used as early as in 1910 by Isador C ...
and the fourteenth floor are skipped, causing the twelfth floor to precede the fifteenth floor, along with all the other 4s. Thus, a building whose top floor is numbered 100 could have just eighty floors.
In Japan
In Japan, the number 4 is avoided in some apartments and hospitals. The number 49 is also considered unlucky, as its pronunciation is similar to the Japanese term ''shiku'', meaning 'to suffer and die'.
In Taiwan
In Taiwan, not using house numbers ending in 4 without also skipping numbers on the opposite side of the road often results in the numbers on two sides of a street getting more and more out of sync as one advances.
In Malaysia
In
Malaysia
Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...
, especially in regions or neighbourhoods where ethnic Chinese are significant in population, the floor number 4 or house address with number 4 is occasionally skipped. The practice is more prevalent in private condominiums, especially those built by ethnic Chinese-owned companies. The fourth floor may be either omitted completely or substituted with "3A".
In Singapore
Singaporean public transport operator
SBS Transit
SBS Transit Ltd (abbreviation: SBS or SBST) is a multi-modal public transport operator in Singapore operating bus and rail services. With a majority of its shares owned by Singaporean multinational transport conglomerate ComfortDelGro Corporati ...
has omitted the number plates for some of its buses whose numbers end with "4" due to this, so if a bus is registered as SBS***3*, SBS***4* will be omitted and the next bus to be registered will be SBS***5*. Note that this only applies to certain buses and not others and that the final asterisk is the
checksum
A checksum is a small-sized block of data derived from another block of digital data for the purpose of detecting errors that may have been introduced during its transmission or storage. By themselves, checksums are often used to verify dat ...
letter and not a number. For example, if the bus is registered as SBS8603J, SBS8604G will be omitted and the next bus to be registered will be SBS8605D.
Singaporean public transport operator
SMRT has omitted the "4" as the first digit of the serial number of the train cars as well as the
SMRT Buses NightRider services .
In Indonesia
In
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...
since the 2000s, an increasing number of skyscrapers skip floors ending with, or containing implicit references to, the number 4 (as well as the 13th floor), especially in those funded by
Chinese Indonesians
Chinese Indonesians (), or simply ''Orang Tionghoa'' or ''Tionghoa'', are Indonesians whose ancestors arrived from China at some stage in the last eight centuries. Chinese Indonesians are the fourth largest community of Overseas Chinese in th ...
. For example, in
Lippo Mall Nusantara (owned by
Lippo Group
Lippo Group is an Indonesian multinational conglomerate company. The company operates internationally providing property development and management services. It was founded by Mochtar Riady. Lippo has a collective presence across Asia and No ...
, which was founded by Chinese Indonesian
Mochtar Riady), 4th floor is replaced by 3A. In
The Energy Tower and most high-rises developed by Agung Sedayu Propertindo, 39th floor is followed by 50th floor. Some buildings, mostly owned by non-Chinese, have a 4th floor. Examples are government buildings, the
Sarinah department store, and most buildings developed by
Indonesian state-owned enterprises.
In Vietnam
In
Vietnam
Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...
, the
Sino-Vietnamese words for "four" ( or ) are used more in formal contexts or in reference to the days of the week like referring to "Wednesday" (). When spoken, its sound is differentiated clearly from the word for "death" (). is also used in formal contexts and proper nouns, and have to be used in compounds like (immortal) or (
Sichuan
Sichuan is a province in Southwestern China, occupying the Sichuan Basin and Tibetan Plateau—between the Jinsha River to the west, the Daba Mountains to the north, and the Yunnan–Guizhou Plateau to the south. Its capital city is Cheng ...
). The word is often used much more in the place of to refer to the number 4. Tetraphobia does not occur in Vietnam as the Sino-Vietnamese words for four and death aren't as commonly used or associated with death in place of the native word for death . Its native Vietnamese equivalents, (four) and (death), are the words mainly used for death and four.
In South Korea
In
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
, tetraphobia is less extreme. The number 4 sounds like the hanja for "death" () (although Korean has no tones), so the floor number 4 or room number 4 is almost always skipped in hospitals, funeral halls, and similar public buildings. In other buildings, the fourth floor is sometimes labelled "F" (for "Four") instead of "4" in elevators. Apartment numbers containing multiple occurrences of the number 4 (such as 404) are likely to be avoided to an extent that the value of the property is adversely affected. The national railroad,
Korail
The Korea Railroad Corporation () is the national railway operator in South Korea. It is branded as KORAIL () and changed its official Korean name () in November 2019. Currently, KORAIL is a public corporation, managed by Ministry of Land, ...
, left out the locomotive number 4444 when numbering a locomotive class from 4401 upwards.
Outside Asia
Efforts to accommodate tetraphobia-related sensitivities have been seen in
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
, which has a significant population of
Chinese descent.
Richmond Hill, Ontario
Richmond Hill ( 2021 population: 202,022) is a city in south-central York Region, Ontario, Canada. Part of the Greater Toronto Area, it is the York Region's third most populous municipality and the 27th most populous municipality in Canada. Ric ...
banned the number four on new houses in June 2013. Property developers in
Vancouver
Vancouver is a major city in Western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the cit ...
omitted the number from new buildings until October 2015, when the city banned non-sequential numbering schemes.
In the
Aria Hotel in
Las Vegas
Las Vegas, colloquially referred to as Vegas, is the most populous city in the U.S. state of Nevada and the county seat of Clark County. The Las Vegas Valley metropolitan area is the largest within the greater Mojave Desert, and second-l ...
, among others, numbers 40-49 are skipped for the same reasons they may be omitted in China.
In some
Italian
Italian(s) may refer to:
* Anything of, from, or related to the people of Italy over the centuries
** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom
** Italian language, a Romance languag ...
regions (e.g.
Tuscany
Tuscany ( ; ) is a Regions of Italy, region in central Italy with an area of about and a population of 3,660,834 inhabitants as of 2025. The capital city is Florence.
Tuscany is known for its landscapes, history, artistic legacy, and its in ...
) four means
coffin
A coffin or casket is a funerary box used for viewing or keeping a corpse, for burial, entombment or cremation. Coffins are sometimes referred to as caskets, particularly in American English.
A distinction is commonly drawn between "coffins" a ...
and thus it is feared.
Corporate examples
Nokia
The software platform
Symbian
Symbian is a discontinued mobile operating system (OS) and computing platform designed for smartphones. It was originally developed as a proprietary software OS for personal digital assistants in 1998 by the Symbian Ltd. consortium. Symbian OS ...
, used by
Finnish telecommunications firm
Nokia
Nokia Corporation is a Finnish multinational corporation, multinational telecommunications industry, telecommunications, technology company, information technology, and consumer electronics corporation, originally established as a pulp mill in 1 ...
in their
Series 60 platform, avoids releases beginning with 4, as it did when it was EPOC and owned by
Psion (there was no Psion Series 4, and there was no 4th edition of S60). This was done "as a polite gesture to Asian customers".
Similarly, Nokia did not release any products under the 4xxx series, although some of Nokia's other products do contain the number 4, such as the
Series 40 platform, and the
Nokia 3410. However, as of the
Mobile World Congress
MWC Barcelona (formerly but still commonly referred to as Mobile World Congress) is an annual trade show dedicated to the mobile communications industry.
The event is held in L'Hospitalet de Llobregat, Spain, at the Fira de Barcelona Gran ...
2019 event, the company had announced the Nokia 4.2.
SaskTel
When
area code 306 was nearing exhaustion in 2011, the
Canadian Radio-television and Telecommunications Commission
The Canadian Radio-television and Telecommunications Commission (CRTC; ) is a public organization in Canada tasked with the mandate as a regulatory agency tribunal for various electronic communications, covering broadcasting and telecommunic ...
originally proposed that the new area code be 474.
However, representatives from
SaskTel
Saskatchewan Telecommunications Holding Corporation, operating as SaskTel, is a Telecommunications in Canada, Canadian Crown corporations of Canada, crown-owned telecommunications firm based in the province of Saskatchewan. Owned by the provinci ...
requested that the new area code be 639 instead, to avoid the negative connotations of 4 in Asian cultures. 639 was subsequently approved as the new area code.
OnePlus
The Chinese
smartphone
A smartphone is a mobile phone with advanced computing capabilities. It typically has a touchscreen interface, allowing users to access a wide range of applications and services, such as web browsing, email, and social media, as well as multi ...
manufacturer
OnePlus chose to name its smartphone model after the
3 and
3T the
5, avoiding the number 4.
Research
A 2001 article by authors Phillips et al published in the ''
British Medical Journal
''The BMJ'' is a fortnightly peer-reviewed medical journal, published by BMJ Publishing Group Ltd, which in turn is wholly-owned by the British Medical Association (BMA). ''The BMJ'' has editorial freedom from the BMA. It is one of the world ...
'' reported a study that looked at mortality statistics in the United States over a 25-year period. The authors reported findings that on the fourth day of the month, Asian people were thirteen percent more likely to die of heart failure. In California, Asians were twenty-seven percent more likely to die of a heart attack on that day. The hypothesis purportedly tested in the study was that psychological stress caused by belief in this superstition could indeed trigger deadly heart attacks and other fatal incidents.
Subsequent efforts by other researchers have failed to replicate the findings reported by Phillips and collaborators. One such effort was by researchers who replicated the 2001 study's methods in a Hong Kong Chinese population which did not show evidence consistent with increased cardiac mortality on the 4th, 14th, or 24th days of the month. Another such effort was by Gary Smith, an economist with expertise in debunking improper use of data in statistical analyses. A 2002 article by Smith was published in the same scientific journal as the 2001 article, and details Smith's replication of Phillips's study using the same dataset but more scientifically appropriate statistical comparisons. Smith's reanalysis of the data did not find evidence to support the conclusions drawn in the 2001 study. Furthermore, Smith's review of other scientific publications by Phillips identified inconsistencies in the 2001 study's methodology compared to the author's other published work, where the 2001 study was reported to include only a subset of cardiac deaths compared to work by Phillips on similar populations with similar definitions of cardiac mortality groups.
In popular culture
*
Guido Mista, a supporting character and core ally from the ''
Golden Wind'' arc of the anime and manga series ''
JoJo's Bizarre Adventure
is a Japanese manga series written and illustrated by Hirohiko Araki. It was originally serialized in Shueisha's manga magazine ''Weekly Shōnen Jump'' from 1987 to 2004, and was transferred to the monthly manga magazine ''Ultra Jum ...
'', suffers from tetraphobia. He demonstrates his fear and aversion of the number four itself through - among other things - complaining or becoming agitated when having to choose something from a group of four, and panicking when he finds himself with exactly four spare bullets for his revolver. Mista commands a
Stand
Stand or The Stand may refer to:
Other
* To assume the upright position of standing
* Forest stand, a group of trees
* Area of seating in a stadium, such as bleachers
* Stand (cricket), a relationship between two players
* Stand (drill pipe) ...
called Sex Pistols, six spirit-like entities, referring to each one as "#1" through "#7", omitting "#4". #5, who has a nervous disposition unlike the others, is frequently picked on by #3, due to it being the 4th member sequentially. Ironically, #5's more timid nature and its hesitance to enter dangerous situations means that it has regularly survived when its comrades were destroyed by enemy stands, thus preventing Mista from dying multiple times throughout the story.
*In the Japanese anime and manga series ''
The Promised Neverland
is a Japanese manga series written by Kaiu Shirai and illustrated by Posuka Demizu. It was serialized in Shueisha's manga magazine ''Weekly Shōnen Jump'' from August 2016 to June 2020, with its chapters collected in 20 volumes. I ...
'', one character uses the number 4 to reference the death of a certain character.
*In ''
Blade Runner
''Blade Runner'' is a 1982 science fiction film directed by Ridley Scott from a screenplay by Hampton Fancher and David Peoples. Starring Harrison Ford, Rutger Hauer, Sean Young, and Edward James Olmos, it is an adaptation of Philip K. Di ...
'' the noodle shop chef tells
Rick Deckard, who is asking for four servings of sushi, that two will be enough for him.
*In ''
Artemis Fowl: The Atlantis Complex'' the titular character, ''
Artemis Fowl II
Dr. Artemis Fowl II is the eponymous character of the '' Artemis Fowl'' series by Eoin Colfer. Colfer has said that he based Artemis on his younger brother Donal, who as a child was "a mischievous mastermind who could get out of any trouble he ...
'', suffers from tetraphobia as a symptom of ''Atlantis Complex''.
See also
*
Curse of 39
*
Faux pas derived from Chinese pronunciation
*
Japanese wordplay
*
List of phobias, including
Numerophobia
*
Numbers in Chinese culture
Some numbers are believed by some to be auspicious or lucky (吉利, ) or inauspicious or unlucky (不吉, ) based on the Chinese language, Chinese word that the number sounds similar to. The numbers Chinese numerology#Six, 6 and Chinese numerolog ...
*
Triskaidekaphobia, fear or avoidance of the number
13
References
External links
*
{{Superstitions
Chinese language
Cultural aspects of death
Homonymy in Chinese
Numerology
Superstitions about numbers
Phobias
Superstitions of Asia