To my ears, the vowel in "sole" or "soul" sounds different from the first vowel in "solo"; it sounds somewhat similar to the vowel in "caught", while the vowel in "solo" does not. (You can listen to sample clips by clicking on the speaker icons in this web page and this one.) The dictionaries I've looked at however don't seem to show this in their indicated pronunciations. What then is the nature and explanation of the difference? I am using American pronunciations.

  • Whose speech are you hearing?
    – Hot Licks
    Feb 17, 2020 at 13:23
  • It's probably to do with the first syllable in "solo" being open, while "sole" is closed: the first syllables of each word are not the same. Vowels are often pronounced slightly differently in open and closed syllables. I couldn't find anything discussing the pronunciation of /o/ in these contexts though.
    – Stuart F
    Feb 17, 2020 at 13:25

1 Answer 1


In some dialects of American English, if there's an /l/ at the end of a syllable after particular vowels, the /l/ turns into /əl/. This means that pairs of words like bowled and bold will get pronounced differently. Listening to a few pronunciations on the internet, this doesn't generally seem to happen in British English (there are also lots of Americans who don't do this).

This generally happens for the vowels found in the words soul, fool, file, foul, feel, fail, foil, and sometimes pal.

In solo, the /oʊ/ and the /l/ are in different syllables, so the /oʊ/ is pronounced normally. In soul, the /l/ ends the syllable, and can turn into /əl/. So what you're hearing is essentially the triphthong /oʊə/ before the /l/.

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