不识好歹 bùshíhǎodǎi to not know what's best for one Origin Definitions Defs Strokes Stroke Words Sentences Sents 不识 不識 bùshí to be ignorant of To not understand or be unaware of something; to fail to appreciate the value or significance of something.好歹 hǎodǎi good and bad the quality of something; the difference between right and wrong