淤 (yū): silt

淤 (yū) is a Chinese character meaning “silt.” Classified as HSK Level 7-9 (HSK 3.0 Standard, CLEC 2022), it is composed of 氵 (semantic) and 於 (phonetic). It ranks #3063 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, 淤 water. Its radical form 氵 (water) appears in many related characters such as 河 (hé, river), 海 (hǎi, sea), 洋 (yáng, ocean).

Spoken pronunciation

Definitions

  1. silt

Etymology & Origin

淤

pictophoneticwater

Decomposition: ⿰氵於 (layout: left-right)

Stroke Order

1
2
3
4
5
6
7
8
9
10
11

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

Words & Compounds

Common Compounds

WordPinyinMeaning
淤泥nounyū nísilt
淤血nounyū xuèvariant of 瘀血
淤积verbyū jīto silt up
出淤泥而不染phrasechū yū ní ér bù rǎnlit. to grow out of the mud unsullied (idiom)
清淤verbqīng yūto dredge
淤伤yū shāngbruising
淤青nounyū qīngbruise
淤血斑yū xuè bānbruise
淤塞verbyū sèchoked with silt
淤浅yū qiǎnto silt up
淤灌yū guànto warp (fertilize land by flooding)
淤滞yū zhìsilted up
祛淤qū yūvariant of 祛瘀
13
Total compounds
77
As first character
15
As last character
8
As middle character

淤 appears in 13 compound words: 77 as the first character, 15 as the last, and 8 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 淤 in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

泥ní
0.6442,480 co-occurrences
积jī
0.4911,170 co-occurrences
塞sāi
0.4831,008 co-occurrences
沙shā
0.441892 co-occurrences
河hé
0.434955 co-occurrences
床chuáng
0.425121 co-occurrences
粘nián
0.41162 co-occurrences
滩tān
0.40894 co-occurrences
汁zhī
0.40466 co-occurrences
涨zhǎng
0.40144 co-occurrences

Example Sentences

AI-Generated

孩子们喜欢在清澈的淤边玩耍,捉小鱼小虾。

hái zǐ men xǐ huān zài qīng chè de yū biān wán shuǎ , zhuō xiǎo yú xiǎo xiā .

Children love to play along the clear banks, catching small fish and shrimp.

中国新闻网·生活Jul 2026

洪涝过后,淤泥、垃圾堆积,环境潮湿,极易滋生细菌、病毒、真菌等致病菌。

hóng lào guò hòu , yū ní , lā jī duī jī , huán jìng cháo shī , jí yì zī shēng xì jūn , bìng dú , zhēn jūn děng zhì bìng jūn .

After flooding, silt and debris accumulate, and the damp environment creates ideal conditions for the growth of pathogenic microorganisms such as bacteria, viruses, and fungi.

中国新闻网·生活Jul 2026

第二天,崴脚处会有大范围的淤青。

dì èr tiān , 崴 jiǎo chǔ huì yǒu dà fàn wéi de yū qīng .

The next day, there will be extensive bruising around the sprained ankle.

NewtalkApr 2026

不细看以为是光复?!网友PO寿丰溪河床淤积照 忧重蹈堰塞湖覆辙

bù xì kàn yǐ wéi shì guāng fù ? ! wǎng yǒu P O shòu fēng xī hé chuáng yū jī zhào yōu chóng dǎo 堰 sāi hú fù zhé

At first glance, you might think it’s Guangfu?! Netizen posts photos of silt buildup in the Shoufeng River, fearing a repeat of the landslide dam disaster

LtnMar 2026

日月潭九蛙清淤出土! 深埋底层“蛙王”重见天日

rì yuè tán jiǔ wā qīng yū chū tǔ ! shēn mái de céng wā wáng chóng jiàn tiān rì

Sun Moon Lake’s Nine Frogs Unearthed During Dredging! The “Frog King,” Long Buried at the Bottom, Sees the Light of Day Again

Character Family

Semantic Family — Characters sharing the 氵 (water) component

Frequently Asked Questions

What does 淤 (yū) mean in Chinese?
淤 (yū) primarily means "silt." It is classified as HSK Level 7-9, making it an expert-level character. It ranks #3063 in character frequency.
How many strokes does 淤 have?
淤 is written with 11 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 淤?
The radical associated with 淤 is 氵 (water). This radical appears in many characters related to water.
What are the components of 淤?
淤 is composed of: 氵 (semantic), 於 (phonetic). Its IDS decomposition is ⿰氵於 with a left-right layout. Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 淤?
Common words with 淤 include: 淤泥 (yū ní, "silt"); 淤血 (yū xuè, "variant of 瘀血"); 淤积 (yū jī, "to silt up"); 出淤泥而不染 (chū yū ní ér bù rǎn, "lit. to grow out of the mud unsullied (idiom)"); 清淤 (qīng yū, "to dredge"). There are over 13 compound words containing this character.
Is 淤 the same in simplified and traditional Chinese?
Yes, 淤 is written the same way in both simplified and traditional Chinese.

Practice writing 淤 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.