- 一生一世 yīshēngyīshì a whole lifetime(idiom) one's whole life; for all of one's days; forever
- 不可一世 bùkěyīshì insufferably arrogant(idiom) to consider oneself unexcelled in the world; extremely arrogant and self-important
- 聪明一世 cōngmíngyīshì wise one's whole lifeto be clever and intelligent throughout one's entire lifetime
- 一世之雄 yīshìzhīxióng hero of the agea great hero of his time; an outstanding figure of the generation
- 目空一世 mùkōngyīshì arrogantto consider everyone else beneath oneself; supercilious and disdainful of one's contemporaries
- 拿破仑一世 nápòlúnyīshì Napoleon INapoleon Bonaparte (1769-1821), military leader and Emperor of the French from 1804 to 1814 and again in 1815
- 第一世界 dìyīshìjiè First World (Maoist theory)the superpowers (the USA and the USSR), as defined in Mao Zedong's Three Worlds Theory
- 聪明一世,懵懂一时 cōngmingyīshìměngdǒngyīshí even the wisest can have a momentary lapse(idiom) even the wisest can have a momentary lapse in judgment; every man has a fool in his sleeve
- 聪明一世,糊涂一时 cōngmingyīshìhútuyīshí even the wise have lapsesa person who is smart their entire life can still have a momentary lapse in judgment; even the wisest may occasionally do something foolish. Both [[聪明一世|聰明一世|cong1 ming2 yi1 shi4]] and [[糊涂一时|糊塗一時|hu2 tu5 yi1 shi2]] can also be used independently.
- 一世界 yīshìjie everywhereEverywhere; all over the place; throughout the entire area.
- 乔治一世 qiáozhìyīshì George IGeorge I of Great Britain (1660-1727)
- 二十一世纪 èrshíyīshìjì 21st centurythe twenty-first century
- 人生一世,草木一春 rénshēngyīshìcǎomùyīchūn life is shortA person has but one life just as grass has but one spring; refers to the brevity of human existence
- 傲睨一世 àonìyīshì to be extremely arrogantto look down on everyone with contempt; to consider oneself far superior to everyone else in the world