| 不法 | bù fǎ | lawless / illegal / unlawful |   |
| 黑道 | hēi dào | dark road / unlawful activities (contrasted with 白道[bai2dao4]) / the underworld / criminal gangs | |
| 篡立 | cuàn lì | to become an unlawful ruler | |
| 关于制止非法劫持航空器的公约 | | Convention for the Suppression of Unlawful Seizure of Aircraft | |
| 法律委员会非法劫持飞机问题小组委员会 | | Sub-Committee of the Legal Committee on the subject of unlawful seizure of aircraft | |
| 非法劫持飞机 | fēi fǎ jié chí fēi jī | unlawful seizure of aircraft | |
| 非法战斗人员 | | unlawful combatant | |
| 制止危害航海安全的非法行为国际会议 | | International Conference on the Suppression of Unlawful Acts against the Safety of Maritime Navigation | |
| 非法倾弃 | | illegal tipping (UK) / illegal dumping (USA) / unlawful dumping | |
| 制止危及海上航行安全非法行为公约 | | Convention for the Suppression of Unlawful Acts against the Safety of Maritime Navigation | |
| 非法干扰问题委员会 | | Committee on Unlawful Interference | |
| 制止不法行为 | | suppression of unlawful acts | |
