| 突然 | tū rán | sudden; abrupt; unexpected |
| 一下子 | yī xià zi | in a short while / all at once / all of a sudden |
| 忽然 | hū rán | suddenly; all of a sudden |
| 只见 | zhǐ jiàn | to see (the same thing) over and over again / to see, to one's surprise, (sth happen suddenly) |
| 不翼而飞 | bù yì ér fēi | to disappear without trace / to vanish all of a sudden / to spread fast / to spread like wildfire |
| 一下 | yī xià | (after a verb) a bit; a little (indicating brief duration, or softening the tone, or suggesting giving sth a try) / all at once; suddenly |
| 股 | gǔ | thigh / part of a whole; portion of a sum / (finance) stock; share / strand of a thread / low-level administrative unit, translated as "section" or "department" etc, ranked below 科[ke1] / classifier for long winding things like ropes, rivers etc / classifier for smoke, smells etc: thread, puff, whiff / classifier for bands of people, gangs etc / classifier for sudden forceful actions |
| 猛然 | měng rán | suddenly; abruptly |
| 对了 | duì le | Correct! / Oh, that's right, ... (when one suddenly remembers sth one wanted to mention) / Oh, by the way, ... |
| 亮出 | liàng chū | to suddenly reveal / to flash (one's ID, a banknote etc) |
| 突变 | tū biàn | sudden change / mutation |
| 翻然 | fān rán | suddenly and completely (realize, change one's strategy etc) / also written 幡然[fan1 ran2] |
| 心血来潮 | xīn xuè lái cháo | to be prompted by a sudden impulse / carried away by a whim / to have a brainstorm |
| 蓦 | mò | leap on or over / suddenly |
| 突如其来 | tū rú qí lái | to arise abruptly / to arrive suddenly / happening suddenly |
| 崛起 | jué qǐ | to rise abruptly (to a towering position) / to tower over / to spring up / to emerge suddenly / the emergence (e.g. of a power) |
| 突击 | tū jī | sudden and violent attack / assault / fig. rushed job / concentrated effort to finish a job quickly |
| 顿时 | dùn shí | immediately; suddenly |
| 一跃而起 | yī yuè ér qǐ | to jump up suddenly / to bound up / to rise up in one bound |
| 勃兴 | bó xīng | to rise suddenly / to grow vigorously |
| 跳出 | tiào chū | to jump out / fig. to appear suddenly |
| 三长两短 | sān cháng liǎng duǎn | unexpected misfortune / unexpected accident / sudden death |
| 灵机一动 | líng jī yī dòng | a bright idea suddenly occurs (idiom); to hit upon an inspiration / to be struck by a brainwave |
| 俄 | é | suddenly / very soon |
| 刺痛 | cì tòng | to tingle; to sting; to have a sudden sharp pain; (fig.) to hurt deeply / tingle; prick; sting; stab of pain |