- 不一样 bùyīyàng differentnot the same; unlike or dissimilar
- 不一定 bùyīdìng not necessarilynot necessarily; not certain; not always the case
- 不一而足 bùyī'érzú numeroustoo many to enumerate; by no means an isolated case
- 表里不一 biǎolǐbùyī duplicitousoutside appearance or speech differs from inner reality or intentions; two-faced
- 言行不一 yánxíngbùyī inconsistentto say one thing and do another
- 不一会 bùyīhuì soon
- 心口不一 xīnkǒubùyī insincereTo say one thing while thinking or meaning another; being duplicitous or hypocritical.
- 不一致字 bùyīzhìzì inconsistent charactersChinese characters sharing the same phonetic component but having different pronunciations.