| 歹 | dǎi | bad; wicked; evil |
| 好歹 | hǎo dǎi | good and bad; most unfortunate occurrence; in any case; whatever |
| 歹徒 | dǎi tú | evil-doer; malefactor; gangster; hoodlum |
| 为非作歹 | wéi fēi zuò dǎi | to break the law and commit crimes (idiom); malefactor; evil-doer; to perpetrate outrages |
| 不问好歹 | bù wèn hǎo dǎi | no matter what may happen (idiom) |
| 不知好歹 | bù zhī hǎo dǎi | not know what's good for one |
| 不识好歹 | bù shí hǎo dǎi | unable to tell good from bad; undiscriminating |
| 做好做歹 | zuò hǎo zuò dǎi | to persuade using all possible arguments (idiom); to act good cop and bad cop in turn |
| 歹意 | dǎi yì | evil intent; malice |
| 歹毒 | dǎi dú | vicious; ruthless; malevolent |