快 kuài

Pleased, joyful; a glad heart.

Fast, quick, sharp, or soon; also happy or pleased. Heart (忄) + 夬 (a decisive split): the heart decides in a flash.

Common Usage & Traps

  • 很快 (hěn kuài) — very fast; very soon
  • 快点 (kuài diǎn) — hurry up
  • 快车 (kuài chē) — express train
  • 快乐 (kuài lè) — happy
  • 快餐 (kuài cān) — fast food
  • 快人 快的人

    As an adjective before a noun, 快 usually needs 的: 快的人 means 'a fast person'. 快人 is not a normal standalone word at HSK 2.

  • 快好 很快好

    To say 'get well soon' or 'will be good soon', use 很快好 or 快好了, not 快好.

What is the difference between 快 and 块?

快 means 'fast' or 'quick'; 块 means 'piece' or 'lump' and is also used for money.

Both are pronounced kuài, but they are different characters. 快 has the heart radical 忄 and relates to speed or happiness. 块 has the earth radical 土 and refers to a piece or chunk, like 一块钱 (one yuan) or 一块蛋糕 (a piece of cake).
CharacterMeaningExample
快fast, quick很快 (very fast)
块piece, lump; yuan一块钱 (one yuan)

How do you use 快 to mean 'soon'?

快 can mean 'soon' before a verb or adjective, often with 要 or 了.

When 快 means 'soon', it often appears before a verb or adjective, sometimes with 要 or 了. For example, 快下雨了 (It's going to rain soon) or 他快来了 (He will come soon). It can also be used alone in responses like 快了 (It's soon).
UsageExampleMeaning
快 + verb + 了快下雨了It's going to rain soon
快 + adjective + 了快好了It's almost done
快 + 要 + verb快要考试了The exam is coming soon

Appears in Stories 5 stories

《森林大火》 Forest Fires and a Homesick Heart
HSK 4 ~4 min read 454 chars
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Follow Xiao Li as he copes with the effects of forest fires near his home in the US and reflects on environmental changes. A thoughtful story for HSK 4 learners.

  • 这里的森林就在大海旁边,过去一直比较 凉快 。

《友好的高友朋》 A Friendly New Friend at Work
HSK 2 ~4 min read 243 chars
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Meet Gao Youpeng, a friendly Beijing coworker who welcomes the narrator with local dishes and a simple language-exchange plan. This warm HSK 2 story is perfect for first readings about work and friendship.

  • 我教他英文,他教我中文,每天学几个词, 很快 ,我们的英语和汉语都能好很多。

《女朋友的苹果手机》 The Girlfriend's Apple Phone
HSK 3 ~3 min read 314 chars
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This humorous dialogue follows a man who spends all his savings on his girlfriend's Apple phone and a lucky number, leaving him broke. A fun read for HSK 3 learners.

  • 你们是不是 快 办喜事了?

《慢还是快?》 Slow or Fast? A Language Learner's Debate
HSK 2 ~8 min read 593 chars
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Is four years to reach HSK 5 fast or slow? Follow a conversation between two learners as they compare study hours and share realistic strategies for busy adults.

  • A:四年,五级,这是 很快 吧?

《大学者和小人物》 The Scholar and the Cookie Seller
HSK 5 ~8 min read 882 chars
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Discover how a simple letter from a cookie seller led to an unexpected friendship with a famous scholar. This heartwarming story explores kindness and connection across social divides.

  • 在他的晚年,有一位卖饼干的小人物成了他的朋友,给他带来一点意外和许多 快乐 。

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