Definition of unrounded in English:

unrounded

adjective

  • 1Not rounded.

    • ‘The inside upper edge should be left unrounded, so as to prevent the staves from splintering when adzing the barrel.’
    • ‘For example, the sharp sides defining the bottom surfaces may be left unrounded.’
    • ‘Front and central vowels and back low vowels are normally pronounced with the lips unrounded.’
    1. 1.1Phonetics
      (of a vowel) pronounced with the lips not rounded.
      • ‘On the other hand, in some regions of the US caught and cot are distinct in pronunciation (typically with a rounded vowel in the first and an unrounded vowel in the second).’
      • ‘The o-sound of go, note, soap begins with a rounded vowel, while the o-sound in not is unrounded.’
      • ‘The resulting vowel is sometimes lightly rounded but more often unrounded, like the stressed vowel of father.’
      • ‘The /u/ of blue, room has a front, lowered realization, sometimes unrounded.’
      • ‘In the Russian transliteration, the vowel y is a high back unrounded vowel (not found in English); it's not like English y.’

Pronunciation:

unrounded

/ʌnˈraʊndɪd/