FrontCentralBack
Closei yɨ ʉɯ u
Near-closeɪ ʏʊ
Close-mide øɘ ɵɤ o
Mid ø̞əɤ̞
Open-midɛ œɜ ɞʌ ɔ
Near-openæɐ
Opena ɶäɑ ɒ

Legend: unrounded•rounded

The close-mid back rounded vowel, or high-mid back rounded vowel, is a type of vowel sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨o⟩.

Close-mid back protruded vowel

The close-mid back protruded vowel is the most common variant of the close-mid back rounded vowel. It is typically transcribed in IPA simply as ⟨o⟩, and that is the convention used in this article. As there is no dedicated diacritic for protrusion in the IPA, the symbol for the close-mid back rounded vowel with an old diacritic for labialization, ⟨̫⟩, can be used as an ad hoc symbol ⟨o̫⟩ for the close-mid back protruded vowel. Another possible transcription is ⟨oʷ⟩ or ⟨ɤʷ⟩ (a close-mid back vowel modified by endolabialization), but this could be misread as a diphthong.

In English, the symbol ⟨o⟩ is typically associated with the vowel in the "goat", but in Received Pronunciation and General American, that vowel is a diphthong whose starting point may be unrounded and more centered than [o]. In Received Pronunciation, the closest vowel to cardinal [o] is the THOUGHT vowel found in words such as caught, horse and hoarse. This is transcribed with ⟨ɔː⟩ by most sources, though the actual realization is closer to [o].

For the close-mid near-back protruded vowel that is usually transcribed with the symbol ⟨ʊ⟩, see near-close back protruded vowel. If the usual symbol is ⟨o⟩, the vowel is listed here.

Features

* Its place of articulation is velar, which means it is articulated with the back of the tongue (the dorsum) at the soft palate.

  • Its roundedness is protruded, which means that the corners of the lips are drawn together, and the inner surfaces exposed.
Spectrogram of [o]

Occurrence

Because back rounded vowels are assumed to have protrusion, and few descriptions cover the distinction, some of the following may actually have compression.

LanguageWordIPAMeaningNotes
AfrikaansStandardbok[bok]'goat'Typically transcribed in IPA with ⟨ɔ⟩. The height varies between close-mid [o] and mid [ɔ̝]. See Afrikaans phonology
BavarianAmstetten dialect[example needed]Contrasts close [u], near-close [], close-mid [o] and open-mid [ɔ] back rounded vowels in addition to the open central unrounded [ä]. Typically transcribed in IPA with ⟨ɔ⟩.
Bengaliতোমার[t̪omɐɾ]'your'See Bengali phonology
Bulgarianуста / usta[os̪ˈt̪a]'mouth'Unstressed allophone of /u/ and /ɔ/. See Bulgarian phonology
Catalansóc[sok]'I am'See Catalan phonology
CzechBohemianoko'eye'Backness varies between back and near-back; may be realized as mid [] instead. See Czech phonology
DanishStandardkone[ˈkʰoːnə]'wife'Also described as near-close [o̝ː]. See Danish phonology
DutchStandard Belgiankool'cabbage'In the Netherlands often diphthongized to [oʊ]. See Dutch phonology
EnglishEstuaryyawn[joːn]'yawn'May be [oʊ] or [o̞ː] instead.
Cockney
Received PronunciationTypically transcribed with ⟨ɔː⟩. See English phonology
South AfricanGeneral and Broad varieties. Cultivated SAE has a more open vowel. See South African English phonology
General Indiango[ɡoː]'go'
General PakistaniVaries between [oː~əʊ~ʊ].
Singaporean
Birmingham and the Black Countrycut[koʔ] 'cut'Corresponds to /ʌ/ in other dialects.
Estoniantool[toːlʲ]'chair'See Estonian phonology
Faroesetola[ˈtʰoːla]'to endure'May be a diphthong [oɔː~oəː] instead. See Faroese phonology
Frenchréseau'network'See French phonology
GermanStandardoder'or'See Standard German phonology
Upper Saxonsondern[ˈsɞ̝nd̥oˤn]'except'Pharyngealized; corresponds to [ɐ] in Northern Standard German. The example word is from the Chemnitz dialect.
GreekSfakianμεταφράζω / metafrázō[metafrázo]'translate'Corresponds to mid [] in Modern Standard Greek. See Modern Greek phonology
Hindustani (Hindi-Urdu)ज़ोर/زور / zor[zoːɾ]'strength, power'See Hindustani phonology
Hungariankór[koːr]'disease'See Hungarian phonology
Italianombra[ˈombrä]'shade'See Italian phonology
Kaingangpipo[pɪˈpo]'toad'
Khmerម៉ូលេគុល / molékŭl[moːleːkul]'molecule'See Khmer phonology
Korean노래 / norae[noɾε]'song'See Korean phonology
KurdishKurmanji (Northern)roj[roːʒ]'day'See Kurdish phonology
Sorani (Central)رۆژ / roj
LatinClassicalsol[soːl]'sun'
LimburgishMost dialectshoof[ɦoːf]'garden'The example word is from the Maastrichtian dialect.
Lower Sorbianwocy[ˈβ̞ot̪͡s̪ɪ]'(two) eyes'Diphthongized to [u̯ɔ] in slow speech.
LuxembourgishSonn[zon]'sun'Sometimes realized as open-mid [ɔ]. See Luxembourgish phonology
Malaymampus[mam.pos]'die'Allophone of /u/ in closed-final syllables. May be [ʊ] or [] depending on the speaker. See Malay phonology
Malayalamന്ന് / onn[on̪ːɨ̆]'one'See Malayalam phonology
Marathiदोन / dōn[doːn]'two'See Marathi phonology
Minangkabausado[sädoː]'all'
Mpadesko[sko]'field'
NorwegianMost dialectslov[loːʋ]'law'The quality varies among dialects; in Urban East Norwegian, it has been variously described as close-mid back [oː] and mid [o̞ː], in Stavangersk it is a close-mid near-back [o̟ː], whereas in Telemark it is a back open-mid vowel [ɔː]. In some dialects it is replaced by the diphthong [ɑʊ]. See Norwegian phonology
Persianلاک‌پشت / lakpošt[lɒkˈpoʃt]'turtle'
Portuguesedodô[doˈdo]'dodo'See Portuguese phonology
Polishwiośnie[ˈvʲoɕɲɛ]'spring'Allophone of /ɔ/ between palatal or palatalized consonants. See Polish phonology
Romanianacolo[aˈkolo]'there'See Romanian phonology
Saterland Frisiandoalje[ˈdo̟ːljə]'to calm'Near-back; typically transcribed in IPA with ⟨ɔː⟩. Phonetically, it is nearly identical to /ʊ/ ([ʊ̞]). The vowel typically transcribed in IPA with ⟨oː⟩ is actually near-close [o̝ː].
Shiwiar[example needed]Allophone of /a/.
SlovakSome speakerstelefón[ˈtɛ̝lɛ̝foːn]'telephone'Realization of /ɔː/ reported to occur in dialects spoken near the river Ipeľ, as well as - under Hungarian influence - in some other speakers. Corresponds to mid [ɔ̝ː] in standard Slovak. See Slovak phonology
Slovenemoj[mòːj]'my'See Slovene phonology
Sothopontsho[pʼon̩t͡sʰɔ]'proof'Contrasts close, near-close and close-mid back rounded vowels. See Sotho phonology
Spanishcamión[kaˈmjon]'truck'See Spanish phonology
SwedishCentral Standardpå'on'Often a centering diphthong (as in ⓘ). See Swedish phonology
Ukrainianмолодь / molod'[ˈmɔlodʲ]'youth'See Ukrainian phonology
Upper SorbianBóh[box]'god'Diphthongized to [u̯ɔ] in slow speech.
Welshnos[noːs]'night'See Welsh phonology
West Frisianbok[bok]'billy-goat'See West Frisian phonology
Wu ChineseShanghainese瓜 / [ko˩]'melon'Specifically in Shanghainese. Height varies between close and close-mid; contrasts with a close to close-mid back compressed vowel.
Yorubaegba mi o[egbamio]'help'

Close-mid back compressed vowel

As there are no diacritics in the IPA to distinguish protruded and compressed rounding, an old diacritic for labialization, ⟨◌᫦⟩ (the opposite of ⟨◌̫⟩), will be used here as an ad hoc symbol for compressed back vowels. It was only added to Unicode in 2025, however, and it may take some time for font support to catch up. Compression of the lips can be shown with the letter ⟨β̞⟩ as ⟨ɤ͡β̞⟩ (simultaneous [ɤ] and labial compression) or ⟨ɤᵝ⟩ ([ɤ] modified with labial compression), though that can suggest that the vowel is a diphthong.

Only Wu Chinese is known to contrast it with the more typical protruded (endolabial) close-mid back vowel, but the height of both vowels varies from close to close-mid.

Features

* Its place of articulation is velar, which means it is articulated with the back of the tongue (the dorsum) at the soft palate.

  • Its roundedness is compressed, which means that the margins of the lips are tense and drawn together in such a way that the inner surfaces are not exposed.

Occurrence

LanguageWordIPAMeaningNotes
Wu ChineseShanghainese都 / [tɤᵝ˩]'capital'Specifically in Shanghainese. Height varies between close and close-mid; contrasts with a close to close-mid back protruded vowel.

Notes

External links