[un.round] vt (1874) 1: to pronounce (a sound) without lip rounding or with decreased lip rounding
2: to spread (the lips) laterally
[2]unround adj (1958): pronounced with the lips not rounded
[un.round] vt (1874) 1: to pronounce (a sound) without lip rounding or with decreased lip rounding
2: to spread (the lips) laterally
[2]unround adj (1958): pronounced with the lips not rounded
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012