底 (dǐ): bottom, base, background, foundation, (equivalent to 的 as possessive particle)

底 (dǐ) is a Chinese character meaning “bottom.” Classified as HSK Level 4 (HSK 3.0 Standard, CLEC 2022), it is composed of 广 (semantic) and 氐 (phonetic). It ranks #543 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, 底 building. Its radical form 广 (shelter) appears in many related characters such as 床 (chuáng, bed), 店 (diàn, shop), 广 (guǎng, wide, broad).

Spoken pronunciation

Definitions

  1. bottom
  2. base
  3. background
  4. foundation
  5. (equivalent to 的 as possessive particle)

Etymology & Origin

底

pictophoneticbuilding

Decomposition: ⿸广氐 (layout: surround-from-upper-left)

Stroke Order

1
2
3
4
5
6
7
8

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

Words & Compounds

HSK Vocabulary with 底

WordPinyinMeaningHSK
到底adverbdào dǐfinally4
彻底adjectivechè dǐthorough5
底下noundǐ xiathe location below sth4
心底nounxīn dǐbottom of one's heart6
年底nounnián dǐthe end of the year4

Common Compounds

WordPinyinMeaning
卧底verbwò dǐto hide (as an undercover agent)
底线noundǐ xiànbottom line
海底nounhǎi dǐseabed
底特律proper-noundǐ tè lǜDetroit, Michigan
垫底verbdiàn dǐto put sth on the bottom
底部noundǐ bùbottom
歇斯底里nounxiē sī dǐ lǐhysteria (loanword)
说到底adverbshuō dào dǐin the final analysis
底层noundǐ céngground floor
底片noundǐ piànnegative
鞋底nounxié dǐsole (of a shoe)
底细noundǐ xìinside information
月底nounyuè dǐend of the month
脚底nounjiǎo dǐsoles of the feet
谷底noungǔ dǐvalley floor
102
Total compounds
31
As first character
60
As last character
9
As middle character

底 appears in 102 compound words: 31 as the first character, 60 as the last, and 9 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 底 in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

彻chè
0.68618,889 co-occurrences
斑bān
0.54050 co-occurrences
垫diàn
0.4771,144 co-occurrences
隧suì
0.4594,442 co-occurrences
泥ní
0.4524,740 co-occurrences
娇jiāo
0.44618 co-occurrences
坑kēng
0.4465,232 co-occurrences
禀bǐng
0.44210 co-occurrences
卧wò
0.4401,867 co-occurrences
层céng
0.4297,860 co-occurrences

Idioms & Chengyu (20)

包袱底儿bāofudǐrHSK 7+

valuable family property; private business; secrets; personal matters; privacy

noun
底栖生物dǐ qī shēng wùHSK 7+

benthic organism

phrase
跌至谷底diē zhì gǔ dǐHSK 7+

to hit rock bottom (idiom)

phrase
归根到底guīgēndàodǐHSK 6+

in the final analysis; it all comes down to

phrase
归根结底guīgēnjiédǐHSK 6+

all in all; ultimately it comes down to

phrase
归根究底guīgēnjiūdǐHSK 6+

ultimately it comes down to

phrase
海底扩张hǎi dǐ kuò zhāngHSK 5+

seafloor spreading (geology)

phrase
海底捞月hǎidǐ lāoyuèHSK 7+

to make a futile effort; to complete a winning hand by drawing the final tile before reaching the dead wall

verb
海底捞针hǎidǐlāozhēnHSK 7+

to look for a needle in a haystack

phrase
尽收眼底jìnshōuyǎndǐHSK 4+

to be all in sight; to take in the whole view

phrase
井底之蛙jǐngdǐzhīwāHSK 7+

a “frog in a well”, a person of very limited outlook and experience

phrase
尼哥底母NígēdǐmǔHSK 7+

Nicodemus

Showing 12 of 20 idioms containing 底.

Example Sentences

AI-Generated

写好底字需要掌握正确的笔画顺序。

xiě hǎo de zì xū yāo zhǎng wò zhēng què de bǐ huà shùn xù .

Mastering the correct stroke order is essential for writing the base characters well.

99 健康网Feb 2026

男生小便后甩一甩会不会导致尿失禁?盆底肌松弛者需谨慎吗

nán shēng xiǎo biàn hòu shuǎi yī shuǎi huì bù huì dǎo zhì niào shī jīn ? pén de jī sōng chí zhě xū jǐn shèn ma

Will a boy's throw after urinating cause urinary incontinence? Should people with loose pelvic floor muscles be cautious?

English News - RthkFeb 2026

...财局:去年违规不算太多 强调监管质素要有底线

. . . cái jú : qù nián wéi guī bù suàn tài duō qiáng diào jiān guǎn zhì sù yāo yǒu de xiàn

... Finance Bureau: Last year's violations were not too many, emphasizing that there should be a bottom line for regulatory quality

三立新聞網Feb 2026

到底有多正?男大生载到班花夜冲险猝死

dào de yǒu duō zhèng ? nán dà shēng zài dào bān huā yè chōng xiǎn 猝 sǐ

How good is it? The male college student died suddenly at night in class

UdnnewsindexFeb 2026

应对川普 我要守住底气

yīng duì chuān pǔ wǒ yāo shǒu zhù de qì

Dealing with Trump, I have to hold on to my confidence

東森新聞Feb 2026

8岁男骑车游南横 撞护栏抛飞摔溪底亡

8 suì nán qí chē yóu nán héng zhuàng hù lán pāo fēi shuāi xī de wáng

An 8-year-old male rode a bicycle to the south and crashed into a guardrail and fell to the bottom of the stream and died

Tatoeba

海滩上你到底愿意去吗?

Hǎitān shàng nǐ dàodǐ yuànyì qù ma?

Are you willing to go to the beach?

Tatoeba

这真是彻底的虚伪!

Zhè zhēnshi chèdǐ de xūwěi!

This is pure hypocrisy!

Tatoeba

咬紧牙关坚持到底!

Yǎojǐnyáguān jiānchí dàodǐ!

Grit your teeth and bear it!

Tatoeba

把这里翻个底朝天!

Bǎ zhèlǐ fān ge dǐcháotiān!

Leave no stone unturned.

Character Family

Semantic Family — Characters sharing the 广 (building) component

广 Radical Family — Characters sharing the shelter radical

Homophones — Characters pronounced dǐ

Frequently Asked Questions

What does 底 (dǐ) mean in Chinese?
底 (dǐ) primarily means "bottom." It is classified as HSK Level 4, making it an upper-intermediate character. It ranks #543 in character frequency.
How many strokes does 底 have?
底 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 底?
The radical associated with 底 is 广 (shelter). This radical appears in many characters related to shelter.
What are the components of 底?
底 is composed of: 广 (semantic), 氐 (phonetic). Its IDS decomposition is ⿸广氐 with a surround-from-upper-left layout. Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 底?
Common words with 底 include: 到底 (dào dǐ, "finally"); 彻底 (chè dǐ, "thorough"); 底下 (dǐ xia, "the location below sth"); 卧底 (wò dǐ, "to hide (as an undercover agent)"); 底线 (dǐ xiàn, "bottom line"). There are over 102 compound words containing this character.
What characters sound the same as 底 (dǐ)?
Several characters share the pronunciation dǐ: 低 (low), 抵 (to press against), 地 (earth, ground), 第 ((prefix indicating ordinal number, as in 第六 "sixth")), and 6 more. Context and tones help distinguish between them in speech and writing.
Is 底 the same in simplified and traditional Chinese?
Yes, 底 is written the same way in both simplified and traditional Chinese.

Practice writing 底 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.