- 不知好歹 bùzhīhǎodǎi unappreciativefailing to recognize or appreciate someone's good intentions; not knowing what is in one's own best interest
- 不识好歹 bùshíhǎodǎi undiscriminatingunable to tell good from bad; failing to recognize or appreciate someone's good intentions
- 不问好歹 bùwènhǎodǎi regardlessno matter what may happen
