"Unofficial" • Chinese-English Dictionary
| 非正式 | fēi zhèng shì | unofficial / informal |   |
| 非官方 | fēi guān fāng | unofficial | |
| 非公式 | fēi gōng shì | unofficial / informal | |
| 外传 | wài zhuàn | unofficial biography (as opposed to official dynastic biography) | |
| 了 |  liào | unofficial variant of 瞭[liao4] | |
| 黑车 | hēi chē | unlicensed or unofficial taxi / unlicensed motor vehicle | |
| 野史 | yě shǐ | unofficial history / history as popular legends | |
| 第二轨道外交 | dì èr guǐ dào wài jiāo | track-two process / unofficial diplomacy | |
| 非正式外交 | track-two process / unofficial diplomacy | |
