苦 (kǔ): bitter, suffer

苦 (kǔ) is a Chinese character meaning “bitter, suffer.” Classified as HSK Level 4 (HSK 3.0 Standard, CLEC 2022), it is composed of 艹 (semantic) and 古 (phonetic). It ranks #634 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, 苦 grass. Its radical form 艹 (grass) appears in many related characters such as 花 (huā, flower), 茶 (chá, tea), 菜 (cài, vegetable, dish).

Spoken pronunciation

Definitions

  1. bitter, suffer

Etymology & Origin

苦

pictophoneticgrass

Decomposition: ⿱艹古 (layout: top-bottom)

Stroke Order

1
2
3
4
5
6
7
8

Practice writing 苦 with real-time feedback — trace each stroke in the correct order and build muscle memory in the HanziFeed app.

Words & Compounds

HSK Vocabulary with 苦

WordPinyinMeaningHSK
痛苦adjectivetòng kǔpain5
辛苦adjective/verbxīn kǔexhausting4
艰苦adjectivejiān kǔdifficult5
酸甜苦辣phrasesuān tián kǔ là(lit.) sour, sweet, bitter and spicy (idiom)5

Common Compounds

WordPinyinMeaning
受苦verbshòu kǔto suffer hardship
苦难nounkǔ nànsuffering
苦恼adjectivekǔ nǎovexed
苦苦adverbkǔ kǔstrenuously
挖苦verbwā kǔto speak sarcastically
苦头nounkǔ tousufferings
刻苦adjectivekè kǔhardworking
苦衷nounkǔ zhōngsecret trouble
苦力nounkǔ lìbitter work
辛辛苦苦adjectivexīn xīn kǔ kǔpainstakingly
苦痛nounkǔ tòngpain
苦涩adjectivekǔ sèbitter and astringent
困苦adjectivekùn kǔdeprivation
苦果nounkǔ guǒlit. bitter fruit
穷苦adjectiveqióng kǔimpoverished
101
Total compounds
69
As first character
26
As last character
5
As middle character

苦 appears in 101 compound words: 69 as the first character, 26 as the last, and 5 in a middle position. Compound statistics computed from SUBTLEX-CH and HSK 3.0 vocabulary data.

Strongest Collocations

Characters that most frequently co-occur with 苦 in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

痛tòng
0.64020,377 co-occurrences
艰jiān
0.6242,906 co-occurrences
恼nǎo
0.541680 co-occurrences
辛xīn
0.5365,694 co-occurrences
挣zhèng
0.510414 co-occurrences
涩sè
0.503364 co-occurrences
贫pín
0.4941,464 co-occurrences
闷mēn
0.482262 co-occurrences
味wèi
0.4412,380 co-occurrences
衷zhōng
0.437516 co-occurrences

Idioms & Chengyu (38)

备尝艰苦bèi cháng jiān kǔHSK 5+

see 備嘗辛苦|备尝辛苦

phrase
备尝辛苦bèi cháng xīn kǔHSK 4+

(idiom) to have suffered all kinds of hardships

phrase
不辞劳苦bùcíláokǔHSK 5+

to spare no effort; to take pains; to take the trouble to; to go to the trouble of doing something

phrase
不辞辛苦bùcíxīnkǔHSK 5+

to spare no effort; to take pains; to take the trouble to; to go to the trouble of doing something

phrase
吃苦耐劳chīkǔnàiláoHSK 5+

to endure hardships and work hard

phrase
愁眉苦脸chóuméikǔliǎnHSK 6+

with knitted brows and a doleful look; looking distressed

phrase
倒悬之苦dào xuán zhī kǔHSK 7+

lit. the pain of being hanged upside down (idiom); fig. extremely critical situation; dire straits

phrase
孤苦零丁gū kǔ líng dīngHSK 7+

variant of 孤苦伶仃

phrase
含辛茹苦hánxīnrúkǔ

to suffer untold hardships (to bring up one's child); to endure sufferings

phrase
坚苦卓绝jiān kǔ zhuó juéHSK 7+

persisting despite trials and tribulations (idiom); conspicuous determination

phrase
艰苦奋斗jiānkǔfèndòuHSK 5+

to struggle through difficult times; to work hard and push through despite hardship

phrase
叫苦不迭jiàokǔbùdiéHSK 7+

to complain of one's suffering endlessly

phrase

Showing 12 of 38 idioms containing 苦.

Example Sentences

AI-Generated

学习的过程虽然辛苦,但收获是值得的。

Xuéxí de guòchéng suīrán xīnkǔ, dàn shōuhuò shì zhíde de.

Although the learning process is hard, the gains are worth it.

UdnnewsindexFeb 2026

社工苦勸「明天記得來」 曾抗拒照顧、無故生氣 ...

shè gōng kǔ 勸 míng tiān 記 dé 來 céng kàng jù zhào 顧 無 gù shēng 氣 . . .

Social worker earnestly urged, "Remember to come tomorrow." 曾抗拒照料、无故生气的...

UdnnewsindexFeb 2026

...高股息⋯她想改買0056、00878!網苦勸:別賣成長資產

. . . gāo gǔ xī tā xiǎng gǎi 買 ! 網 kǔ 勸 別 賣 chéng 長 資 產

...high-dividend stocks... She wants to switch to 0056 and 00878! Netizens plead: Don't sell your growth assets!

Hk01.comFeb 2026

調查:近8成外傭被剝削 苦主被毆兼扣薪 泣訴待遇「畜生不如」

調 chá jìn chéng wài 傭 bèi 剝 xiāo kǔ zhǔ bèi 毆 jiān kòu xīn qì 訴 dài yù chù shēng bù rú

Survey: Nearly 80% of Foreign Domestic Helpers Face Exploitation Victims Report Being Beaten and Wages Withheld Weeping Complaints: "Treatment Worse Than Animals"

三立新聞網Feb 2026

移植心臟運送遭乾冰凍壞 男童苦撐2月亡

yí zhí xīn 臟 運 sòng zāo 乾 bīng 凍 壞 nán tóng kǔ 撐 yuè wáng

Transplanted heart delivery frozen in dry ice, boy died in two months of suffering

WorldjournalFeb 2026

冬奧/苦等46年 美國男子冰球延長賽絕殺加拿大奪...

dōng 奧 kǔ děng nián měi 國 nán zǐ bīng qiú yán 長 賽 絕 殺 jiā ná dà 奪 . . .

Winter Olympics/46 Years of Waiting U.S. Men's Ice Hockey Blanks Canada in Extended...

Tatoeba

什么痛苦能让你想用酒精去麻醉自己?

Shénme tòngkǔ néng ràng nǐ xiǎng yòng jiǔjīng qù mázuì zìjǐ?

What pain are you trying to cover up with alcohol?

Tatoeba

你真想让汤姆受苦吗?

Nǐ zhēn xiǎng ràng Tāngmǔ shòukǔ ma?

Do you really want Tom to suffer?

Tatoeba

愚笨的头脑使腿受苦。

Yúbèn de tóunǎo shǐ tuǐ shòukǔ.

A foolish head makes for weary feet.

Tatoeba

我不能再承受这种痛苦。

Wǒ bù néng zài chéngshòu zhèzhǒng tòngkǔ.

I can't take this pain anymore.

Character Family

Semantic Family — Characters sharing the 艹 (grass) component

Homophones — Characters pronounced kǔ

Frequently Asked Questions

What does 苦 (kǔ) mean in Chinese?
苦 (kǔ) primarily means "bitter, suffer." It is classified as HSK Level 4, making it an upper-intermediate character. It ranks #634 in character frequency.
What's the difference between 苦 and 甜?
苦 (kǔ) and 甜 (tián) are often confused. antonym. The key distinguishing feature: 苦 (bitter) vs 甜 (sweet).
How many strokes does 苦 have?
苦 is written with 8 strokes. The correct stroke order matters for recognition and handwriting speed — practice with the animated guide above to build proper technique.
What is the radical of 苦?
The radical associated with 苦 is 艹 (grass). This radical appears in many characters related to grass.
What are the components of 苦?
苦 is composed of: 艹 (semantic), 古 (phonetic). Its IDS decomposition is ⿱艹古 with a top-bottom layout. Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 苦?
Common words with 苦 include: 痛苦 (tòng kǔ, "pain"); 辛苦 (xīn kǔ, "exhausting"); 艰苦 (jiān kǔ, "difficult"); 受苦 (shòu kǔ, "to suffer hardship"); 苦难 (kǔ nàn, "suffering"). There are over 101 compound words containing this character.
What characters sound the same as 苦 (kǔ)?
Several characters share the pronunciation kǔ: 库 (warehouse), 哭 (to cry). Context and tones help distinguish between them in speech and writing.
Is 苦 the same in simplified and traditional Chinese?
Yes, 苦 is written the same way in both simplified and traditional Chinese.

Practice writing 苦 with real-time feedback

Trace stroke sequences, hear spoken pronunciation, and build lasting retention with spaced repetition in the HanziFeed app.

Character data sourced from Unihan (Unicode Consortium), SUBTLEX-CH frequency corpus (Cai & Brysbaert, 2010), and Make Me a Hanzi (stroke data). Collocation strength measured via NPMI (Normalized Pointwise Mutual Information). Verified by the HanziFeed linguistics team.

HSK classification follows the HSK 3.0 Standard (Center for Language Education and Cooperation, CLEC, 2022 revision). Idiom data from Wiktionary (CC BY-SA 3.0).

Data last verified: March 2026.