Fluentide
HSK 2

fast; quick; soon

adjectiveneutral
kuài4th tone

HSK level

1
2
3
4
5
6
Pinyin
kuài
Part of speech
adjective
Level
HSK 2
Strokes
7
Register
neutral

Stroke order for 快

is written with 7 strokes. The animation replays automatically.

What does 快 mean?

(kuài) primarily means 'fast / quick' as an adjective: 他跑得很快 ('he runs very fast'), 这辆车很快 ('this car is fast').

Two extensions are everyday: (1) 'soon / about to' as an adverb signaling imminent time — 快到了 ('almost there'), 快下雨了 ('it's about to rain'), often paired with at the end; (2) 'hurry up!' as an imperative — 快来 ('come quickly'), 快走 ('hurry, let's go'). In speed comparisons it pairs naturally with (màn, 'slow'): / . As a verb complement it follows : 跑得快 ('runs fast'), 学得快 ('learns quickly').

is also a feeling-word in 愉快 (yúkuài, 'pleasant') and 快乐 (kuàilè, 'happy') — happiness in Chinese is associated with the briskness of . Don't confuse with the homophone (kuài), the measure word for money and a piece of something. The phrase 快快 (reduplicated) means 'quickly, quickly' for urgency: 快快走 ('hurry, hurry, go!').

Example sentences

他跑得很快。

Tā pǎo de hěn kuài.

He runs very fast.

spoken

快下雨了。

Kuài xià yǔ le.

It's about to rain.

spoken

快点,我们要迟到了。

Kuài diǎn, wǒmen yào chídào le.

Hurry up, we're going to be late.

spoken

这班车很快。

Zhè bān chē hěn kuài.

This train/bus is very fast.

neutral

Common phrases with 快

快点kuài diǎnhurry up; a bit faster
很快hěn kuàivery fast; very soon
快要kuài yàoabout to; almost
快车kuài chēexpress train / bus
越来越快yuè lái yuè kuàifaster and faster

Synonyms

迅速xùnsù

迅速 is 'rapid / swift' — more formal and written. Use in conversation; use 迅速 in news, reports, and formal writing. 警察迅速到达现场 = 'police rapidly arrived at the scene.'

马上mǎshàng

马上 means 'right away / immediately' as a time adverb. can mean 'soon' but emphasizes speed; 马上 emphasizes 'in the next moment.' Often combined: 马上就快到了.

Don't confuse 快 with

kuài

Same pronunciation (kuài) but is a measure word — for money (一块钱 'one yuan') and pieces of things (一块蛋糕 'a piece of cake'). is fast / soon. Different characters.

筷子kuàizi

筷子 = chopsticks. Sounds similar but is built on , not . The bamboo radical marks it as a tool.

快乐kuàilè

快乐 means 'happy' — the same character but a different word. 我很快 sounds incomplete; you'd say 我很快乐 for 'I'm happy' or 我跑得很快 for 'I run fast.'

FAQ

Acquire it by listening

Meet 快 again — in real Chinese, at your level.

Fluentide turns real news into Chinese listening at your exact level, so words like 快 show up again and again in natural sentences — with pinyin and translation every time. No flashcards. Free to start.