不识好歹 Traditional 不識好歹 bù shí hǎo dǎi 🔊 unable to tell good from bad (idiom) + Keep this word Meanings bù shí hǎo dǎi 不識好歹 unable to tell good from bad (idiom)undiscriminating Its characters 不bùnot; noHSK 1识shíto knowHSK 6好hǎogood; wellHSK 1歹dǎibad