緘口不言 [ㄐㄧㄢ ㄎㄡˇ ㄅㄨˋ ㄧㄢˊ; jian1 kou3 bu4 yan2] lips sealed and not saying anything (idiom); fig. to omit mention (of a non-person or embarrassing topic) to censor ◄ ►