King's Kung-Fu& Tai Chi

Chinese symbol for “unhappy”

不快
bù kuài
unhappy; in low spirits; (of a knife) not sharp

The closest CC-CEDICT match for unhappy is 不快 (bù kuài), defined as: unhappy; in low spirits; (of a knife) not sharp.

Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.

Characters and stroke order

不 bù
no, not, un-; negative prefix
radical 1 ⼀ · 4 strokes
快 kuài
speedy, rapid, quick; soon
radical 61 ⼼ · 7 strokes

Other Chinese words for “unhappy”

WordPinyinMeaning
闷闷不乐 (悶悶不樂)mèn mèn bù lèdepressed; sulky
暋mínunhappy; worried
眳睛míng jīngunhappy; dissatisfied
葸xǐfeel insecure; unhappy
恓惶xī huángbusy and restless; unhappy

Related words

Other words that share a character with 不快.

WordPinyinMeaning
不是bù shìno; is not
不能bù néngcannot; must not
不会 (不會)bù huìimprobable; unlikely
不过 (不過)bù guòonly; merely
不同bù tóngdifferent; distinct
快乐 (快樂)kuài lèhappy; joyful
快速kuài sùfast; high-speed; rapid
尽快 (儘快)jǐn kuàias quickly as possible; as soon as possible

See also: Japanese symbol for “unhappy”.

Data: CC-CEDICT (CC BY-SA 4.0); Unihan Database (Unicode License v3); Make Me a Hanzi (Arphic Public License (graphics.txt); LGPL-3.0-or-later (dictionary.txt)); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.