Английский словарь американских идиом - hem and haw

{v. phr.} 1. To pause or hesitate while speaking, often with little throat noises. * /The man was a poor lecturer because he hemmed and hawed too much./ 2. To avoid giving a clear answer; be evasive in speech. * /The principal asked Bob why he was late to school, and Bob only hemmed and hawed./ Compare: BEAT AROUND THE BUSH.