In English, the checked vowels are the following:[1] There are a few exceptions, mostly in interjections: eh and meh with /ɛ/; duh, huh, uh, uh-uh, and uh-huh with /ʌ/; nah with /æ/ or /ʌ/; and yeah with /ɛ/ (in accents that lack the diphthong /ɛə/) or /æ/.
There are also the onomatopoeia baa for /æ/ and the loanword pho for /ʌ/ when pronounced in American English, as well as sometimes milieu and pot-au-feu.
In non-rhotic dialects, non-prevocalic instances of /ɜːr/ as in purr, burr and /ər/ as in letter, banner pattern as vowels, with the former often being the long counterpart of the latter and little to no difference in quality: [pʰəː, bəː, ˈlɛtə, ˈbænə].
In rhotic dialects, they pattern as vowel+consonant sequences, following the historical situation, even though they often surface as rhotacized vowels: [pʰɚ, bɚ, ˈɫɛɾɚ, ˈbɛənɚ] (or, in other analyses, syllabic postalveolar/retroflex approximants: [pʰɹ̩] etc.)
The same applies to /ɪər/, /ʊər/ and /ɛər/, which are realized as centering diphthongs or long monophthongs in non-rhotic varieties of English, but as vowel+consonant sequences (alternative analysis: centering diphthongs with a rhotacized offset) in rhotic English.