哑

啞
yā
  1. (onom.) sound of cawing
  2. sound of infant learning to talk
  3. variant of 呀 yā

CEDICT

onomatopoeic

Homographs

哑 yǎ
  1. mute; dumb; incapable of speech
  2. (of a voice) hoarse; husky
  3. (bound form) (of a bullet, bomb etc) dud