一切經音義 87.173

87.173

喑者（上於衿反方言云齊宋之間謂啼極無聲曰喑俗謂喑瘂也說文從口音聲）。

Mute person (喑者: first character fanqie 於衿; the Fangyan says: "Between Qi and Song, when crying reaches an extreme without sound, it is called yīn (喑); vulgarly called dumb." The Shuowen says it is formed from 口 with 音 phonetic).