lateral fricative

A lateral is a consonant in which the airstream proceeds along one or both of the sides of the tongue, but it is blocked by the tongue from going through the middle of the mouth. An example of a lateral consonant is the English ''L'', as in ''Larry''. Lateral consonants contrast with central consonants, in which the airstream flows through the center of the mouth.

For the most common laterals, the tip of the tongue makes contact with the upper teeth (see dental consonant) or the upper gum (see alveolar consonant), but there are many other possible places for laterals to be made. The most common laterals are approximants and belong to the class of liquids, but lateral fricatives and affricates are also common in some parts of the world. Some languages, such as the Iwaidja and Ilgar languages of Australia, have lateral flaps, and others, such as the Xhosa and Zulu languages of Africa, have lateral clicks.

When pronouncing the labiodental fricatives , the lip blocks the airflow in the centre of the vocal tract, so the airstream proceeds along the sides instead. Nevertheless, they are not considered lateral consonants because the airflow never goes over the side of the tongue. No known language makes a distinction between lateral and non-lateral labiodentals. Plosives are never lateral, but they may have lateral release. Nasals are almost never lateral either, but reported in Nzema, and some languages have lateral nasal clicks. For consonants articulated in the throat ( laryngeals), the lateral distinction is not made by any language, although pharyngeal and epiglottal laterals are reportedly possible.

Examples

English has one lateral phoneme: the lateral approximant , which in many accents has two allophones. One, found before vowels (and /j/) as in ''lady'' or ''fly'' (or ''value''), is called ''clear l'', pronounced as the alveolar lateral approximant with a "neutral" position of the body of the tongue. The other variant, so-called ''dark l'', found before consonants or word-finally, as in ''bold'' or ''tell'', is pronounced as the uvularized alveolar lateral approximant with the tongue assuming a spoon-like shape with its back part raised, which gives the sound a - or -like resonance. In some languages, like Albanian, those two sounds are different phonemes. Malsia e Madhe Gheg Albanian and Salamina Arvanitika even have the three-way distinction of laterals , and . East Slavic languages contrast and but do not have

In many British accents (e.g. Cockney), dark may undergo vocalization through the reduction and loss of contact between the tip of the tongue and the alveolar ridge, becoming a rounded back vowel or glide. This process turns ''tell'' into , as must have happened with ''talk'' or ''walk'' at some stage. A similar process happened during the development of many other languages, including Brazilian Portuguese, Old French

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