冇分寸 (mou5 fan1 cyun3) — to have no sense of propriety; to have no sense of knowing what is appropriate or what is the acceptable limits / boundaries; to overstep the mark [colloquial] in Cantonese
mouˏ₅冇fanˉ¹分cyun˗₃寸Mandarin Pinyin: mao3 fen1cun5
Meaning of 冇分寸
nounto have no sense of propriety; to have no sense of knowing what is appropriate or what is the acceptable limits / boundaries; to overstep the mark [colloquial]