百ㄅㄞˇbǎi無ㄨˊwú禁ㄐㄧㄣˋjìn忌ㄐㄧˋjì

毫無忌諱。《歧路燈·第六一回》：「若是遇見個正經朋友，山向利與不利，穴口開與不開，選擇日子，便周章的百無禁忌。」

英all taboos are off (idiom); anything goes, nothing is taboo