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In linguistics, specifically phonetics and phonology, 'schwa' can mean:

★ An unstressed and toneless neutral vowel sound in any language, often but not necessarily a mid-central vowel. Such vowels are often transcribed with the symbol <>, regardless of their actual phonetic value.

★ The mid-central vowel sound (rounded or unrounded) in the middle of the vowel chart, stressed or unstressed. In IPA phonetic transcription, it is written as <>. In this case the term ''mid-central vowel'' may be used instead of ''schwa'' to avoid ambiguity.

★ The Latin letter ə and the Cyrillic letter ә (see the respective articles).

Contents

The term

Schwa as a neutral vowel

Schwa indogermanicum

See also

The term

The word "schwa" is from the Hebrew word שְׁוָא (''šěwā’'', ), meaning "nought"—it originally referred to one of the niqqud vowel points used with the Hebrew alphabet, which looks like a vertical pair of dots under a letter. This sign has two uses: one to indicate the schwa vowel-sound and one to indicate the complete absence of a vowel. These uses do not conflict because schwa is, in Hebrew, an epenthetic vowel, the equivalent of "no vowel at all".
Sometimes the term "schwa" is used for any epenthetic vowel; however, different languages use different epenthetic vowels.

Schwa as a neutral vowel

Schwa is the most common vowel sound in English, a reduced vowel in many unstressed syllables, especially if syllabic consonants are not used:

★ like the 'a' in ''about''

★ like the 'e' in ''taken'' and ''the'' (if before a consonant)

★ like the 'i' in ''pencil''

★ like the 'o' in ''eloquent''

★ like the 'u' in ''circus''

★ like the 'y' in ''sibyl''
Many British English (BrE) dialects have two schwa sounds, whereas many American English (AmE) dialects have only one. Schwa is a very short neutral vowel sound, and like all vowels, its precise quality varies depending on the adjacent consonants. In most varieties of English, schwa mostly occurs in unstressed syllables (exceptions include BrE ''concerted''), but in New Zealand English and South African English the high front lax vowel (as in the word ''bit'') has shifted open and back to sound like schwa, and these dialects include both stressed and unstressed schwas. In General American, schwa is one of the two vowel sounds that can be rhotacized. This sound is used in words with unstressed "er" syllables, such as ''dinner''.
Quite a few languages have a sound similar to schwa. It is similar to a short French unaccented ''e'', which in that language is rounded and less central, more like an open-mid or close-mid front rounded vowel. It is almost always unstressed, though Albanian, Bulgarian, and Afrikaans are three languages that allow stressed schwas. Many Caucasian languages and some Uralic languages (e.g. Komi) also use phonemic schwa, and allow schwas to be stressed. In Dutch, the vowel of the suffix ''-lijk'', as in ''waarschijnlijk'' (''probably'') is pronounced as a schwa. In the Eastern dialects of Catalan, including the standard language variety, based in the dialect spoken in and around Barcelona, an unstressed "a" or "e" is pronounced as a schwa (called ''"vocal neutra"'', "neutral vowel"). In the dialects of Catalan spoken in the Balearic Islands, a stressed schwa can occur. Stressed schwa can occur in Romanian as in ''mătură'' ['mə - tu - rə] (''broom'').
Other spellings of the sound include in Armenian, in Romanian, and ë in Albanian.

Schwa indogermanicum

Main articles: Laryngeal theory

The term "schwa" is also used for vowels of uncertain quality (rather than neutral sound) in the reconstructed Proto-Indo-European language. It was observed that, while for the most part ''a'' in Latin and Ancient Greek corresponds to ''a'' in Sanskrit, there are instances where Sanskrit has ''i'' while Latin and Greek have ''a'', such as ''pitar'' (Sanskrit) vs ''pater'' (Latin and Ancient Greek). This postulated "schwa indogermanicum" evolved into the theory of the so-called laryngeals. Most scholars of Proto-Indo-European would now postulate three different phonemes rather than a single indistinct schwa. Some scholars postulate yet more, to explain further problems in the Proto-Indo-European vowel system. Most reconstructions of '' in older literature would correspond to
★ -h₂- in contemporary notation.

See also

★ Epenthesis

★ R-colored vowel

★ Reduced vowel

★ The Schwa Was Here

★ Vowel reduction

★ Unstressed vowel