失声shīshēng 1.不自主地发出声音{cry out despite oneself}: ～喊叫{cry out involuntarily}|～大笑。{crack up} 2.因悲痛过度而哽咽,哭不出声来{lose one's voice; become choked with sobs due to excessive sorrow}: 痛哭～。{be choked with tears; cry oneself hoarse} 3.失音{aphonia; loss of voice, down to a whisper}: 一天喊下来,喉咙都～了。{After crying the whole day, I could only talk in a whisper.}