井

See also: 丼, 并, 开, 幷, and ＃

井 U+4E95, 井 CJK UNIFIED IDEOGRAPH-4E95 ← 五 [U+4E94] CJK Unified Ideographs 亖 → [U+4E96]

Translingual

Han character

井 (Kangxi radical 7, 二+2, 4 strokes, cangjie input 廿廿 (TT), four-corner 5500₀, composition ⿻一廾)

Derived characters

• 㘫, 妌, 𪪁, 汫, 阱, 𪰉, 肼, 㐩, 𭾠, 畊, 𮈃, 𬙍, 耕, 䎴, 𬟷, 𮗻, 𬪦, 㓝, 刱, 𫡳, 𫎁, 宑, 𬜣, 𬼾, 𭾞, 穽, 𬆓, 䨍, 坓, 汬, 丼, 𬑽, 囲
• 进, 讲 (Simplified from 進 and 講)

Descendants

• ヰ (Katakana character derived from Man'yōgana)

References

• Kangxi Dictionary: page 86, character 14
• Dai Kanwa Jiten: character 258
• Dae Jaweon: page 183, character 1
• Hanyu Da Zidian (first edition): volume 1, page 10, character 4
• Unihan data for U+4E95

---

Chinese

simp. and trad.		井
alternative forms		丼

Glyph origin

Historical forms of the character 井
Shang	Western Zhou	Warring States	Shuowen Jiezi (compiled in Han)	Liushutong (compiled in Ming)
Oracle bone script	Bronze inscriptions	Chu slip and silk script	Small seal script	Transcribed ancient scripts
Oracle bone script j12550 j12551 j12552 j12553 j12554 j12555 j12556 j12557 j12558 j12559 j12560 j12561 j12562 j12563 j12564 j12565 j12566 j12567 j12568 j12569 j12570 j12571 j12572 j12573 j12574 j12575 Bronze inscriptions b07748 b07749 b07750 b07751 b07752 b07753 b07754 b07755 b07757 b07758 b07759 b07760 b07761 b07762 b07763 b07764 b07765 b07766 b07767 b07768 b07769 b07770 b07771 b07772 b07773 b07774 b07775 b07776 b07777 b07778 b07779 b07780 Small seal script s03663 Transcribed ancient scripts L17889 L17890 L17891 L17892
References: Mostly from Richard Sears' Chinese Etymology site (authorisation), which in turn draws data from various collections of ancient forms of Chinese characters, including: Shuowen Jiezi (small seal), Jinwen Bian (bronze inscriptions), Liushutong (Liushutong characters) and Yinxu Jiaguwen Bian (oracle bone script).

Characters in the same phonetic series (井) (Zhengzhang, 2003) 

	Old Chinese
硎	*kʰreːŋ, *ɡeːŋ
耕	*kreːŋ
荊	*keŋ
井	*skeŋʔ
丼	*kl'oːmʔ, *skeŋʔ
妌	*sɡeŋʔ
穽	*sɡeŋʔ, *sɡeŋs
阱	*sɡeŋʔ, *sɡeŋs
汫	*sɡeːŋʔ
刑	*ɡeːŋ
形	*ɡeːŋ
邢	*ɡeːŋ
鉶	*ɡeːŋ
型	*ɡeːŋ
侀	*ɡeːŋ

井 – an old well in a historic area in Shenzhen. Notice the square shape.

Pictogram (象形) – a square well, with supports on four sides.

Some forms have a stone inside the well, as in 丼.

Etymology 1

Definitions

(deprecated template usage) 井

1. well (a hole sunk into the ground)
2. well-shaped object; mineshaft, pit
3. hometown
4. neat; tidy

   井井有條／井井有条  ―  jǐngjǐngyǒutiáo  ―  neat and tidy

5. 48th hexagram of the I Ching
6. a surname

Synonyms

Dialectal synonyms of 水井 (“well (for collecting water)”) [map]

Variety	Location	Words edit
Classical Chinese		井
Formal (Written Standard Chinese)		水井, 井
Northeastern Mandarin	Beijing	水井, 井
	Chengde	井
	Chifeng	井
	Hulunbuir (Hailar)	井
	Heihe	井
	Qiqihar	井
	Harbin	水井, 井
	Jiamusi	井
	Baicheng	井
	Changchun	井
	Tonghua	井
	Shenyang	井
	Jinzhou	井
	Singapore	水井, 井
Jilu Mandarin	Tianjin	井
	Tangshan	井
	Cangzhou	井
	Baoding	井
	Shijiazhuang	井
	Lijin	井
	Jinan	水井, 井
Jiaoliao Mandarin	Dalian	井
	Dandong	井
	Yantai	井
	Yantai (Muping)	水井, 井
	Qingdao	井
	Zhucheng	井
Central Plains Mandarin	Luoyang	井
	Lingbao	井
	Jining	井
	Wanrong	井
	Linfen	井
	Shangqiu	井
	Yuanyang	井
	Zhengzhou	井
	Xinyang	井
	Baihe	井
	Xi'an	井
	Baoji	井
	Tianshui	井
	Xining	水井, 井
	Xuzhou	水井, 井
	Fuyang	井
Lanyin Mandarin	Yinchuan	井
	Lanzhou	井
	Dunhuang	井
	Hami	井
	Ürümqi	井
Southwestern Mandarin	Chengdu	井
	Nanchong	水井, 井
	Dazhou	井
	Hanyuan	井
	Xichang	井
	Zigong	井
	Chongqing	水井, 井
	Wuhan	井
	Yichang	井
	Xiangyang	井
	Tianmen	井
	Guiyang	水井, 井
	Zunyi	水井, 井
	Bijie	水井, 井
	Liping	井, 吊井
	Zhaotong	井
	Dali	井
	Kunming	水井, 井
	Mengzi	井
	Guilin	井
	Liuzhou	水井, 井
	Jishou	井, 吊井
	Changde	井
	Hanzhong	井
Jianghuai Mandarin	Nanjing	井
	Yangzhou	井
	Lianyungang	井
	Lianshui	井
	Nantong	井
	Anqing	井
	Wuhu	井
	Hefei	井
	Hong'an	井, 涼水井
Cantonese	Guangzhou	井
	Hong Kong	井
	Hong Kong (San Tin; Weitou)	井
	Hong Kong (Kam Tin; Weitou)	井
	Hong Kong (Ting Kok)	井
	Hong Kong (Tung Ping Chau)	水井
	Macau	井
	Guangzhou (Panyu)	井
	Guangzhou (Huashan, Huadu)	井
	Guangzhou (Conghua)	井
	Guangzhou (Zengcheng)	井
	Foshan	井
	Foshan (Shatou, Nanhai)	井
	Foshan (Shunde)	井
	Foshan (Sanshui)	井
	Foshan (Mingcheng, Gaoming)	水井
	Zhongshan (Shiqi)	井
	Zhuhai (Qianshan, Xiangzhou)	井
	Zhuhai (Shangheng, Doumen; Tanka)	井
	Zhuhai (Doumen)	井
	Jiangmen (Baisha)	井
	Jiangmen (Xinhui)	井
	Taishan	水井, 井
	Kaiping (Chikan)	井
	Enping (Niujiang)	井
	Heshan (Yayao)	水井
	Dongguan	井
	Shenzhen (Shajing, Bao'an)	井
	Kuala Lumpur (Guangfu)	水井, 井
Gan	Nanchang	井
	Lichuan	井
Hakka	Meixian	井
	Huizhou (Huicheng; Bendihua)	井
	Dongguan (Qingxi)	井
	Shenzhen (Shatoujiao)	井
	Zhongshan (Nanlang Heshui)	井
	Guangzhou (Lütian, Conghua)	井
	Yudu	井
	Hong Kong	井
	Senai (Huiyang)	井
Huizhou	Jixi	井
	Shexian	井
Jin	Taiyuan	井, 井兒
	Yangyuan	井
	Datong	井
	Xinzhou	水井, 井
	Lüliang (Lishi)	井兒
	Changzhi	井
	Linhe	井
	Jining	井
	Hohhot	井
	Erenhot	井
	Pingshan	井
	Zhangjiakou	井, 土井
	Handan	井
	Linzhou	井
	Suide	井, 井子
Northern Min	Jian'ou	水井
Eastern Min	Fuzhou	水井, 井
Southern Min	Xiamen	鼓井, 井, 水井
	Quanzhou	鼓井, 水井
	Jinjiang	鼓井
	Zhangzhou	鼓井, 水井
	Taipei	井
	New Taipei (Tamsui)	井, 鼓井
	New Taipei (Sanxia)	井
	New Taipei (Pingxi)	井
	Kaohsiung	井
	Kaohsiung (Cijin)	井
	Kaohsiung (Hongmaogang, Siaogang)	井
	Kaohsiung (Dalinpu, Siaogang)	井
	Kaohsiung (Tianliao)	井
	Tainan (Anping)	井
	Kinmen	井
	Penghu (Magong)	井
	Penghu (Xiyu)	井
	Penang (Hokkien)	井
	Singapore (Hokkien)	井
	Zhangping (Yongfu)	鼓井
	Chaozhou	井
	Bangkok (Teochew)	水井
	Johor Bahru (Teochew)	水井
	Leizhou	井
	Haikou	水井
Zhongshan Min	Zhongshan (Longdu, Shaxi)	井
Southern Pinghua	Nanning (Tingzi)	井, 打井
Wu	Shanghai (Chongming)	井
	Suzhou	井
	Danyang	井
	Hangzhou	水井
	Ningbo	水井, 井
	Wenzhou	水井, 井
	Jinhua	井
Xiang	Changsha	水井, 吊井
	Shuangfeng	井

Etymology 2

For pronunciation and definitions of 井 – see 阱 (“pitfall, trap”). (This character is the second-round simplified form of 阱).

Notes: Simplified Chinese is mainly used in Mainland China, Malaysia, and Singapore. Traditional Chinese is mainly used in Hong Kong, Macau, and Taiwan.

(deprecated template usage)

---

Japanese

A well (井, 丼)

Kanji

井

(Fourth grade kyōiku kanji)

1. well

Readings

• Go-on: しょう (shō, Jōyō ^†)^{←しやう (syau, historical)}
• Kan-on: せい (sei, Jōyō)
• Kun: い (i, 井, Jōyō)^{←ゐ (wi, 井, historical)}、いど (ido, 井)^{←ゐど (wido, 井, historical)}

Compounds

Compounds

• 井(い)桁(けだ) (ikeda): well curb
• 井(い)堰(せき) (iseki)
• 井(い)戸(ど) (ido): well
• 井(い)筒(づつ) (izutsu)
• 井(い)綱(づな) (izuna)
• 井(い)守(もり) (imori): salamander, newt
• 甘(かん)井(せい) (kansei): sweet well
• 井(せい)蛙(あ) (seia): frog in a well
• 井(せい)水(すい) (seisui): well water
• 井(せい)泉(せん) (seisen): well, well water
• 井(せい)底(てい) (seitei): bottom of a well
• 井(せい)目(もく) (seimoku)
• 油(ゆ)井(せい) (yusei): oil well

Etymology 1

Kanji in this term
井
い Grade: 4
kun'yomi

wi > i.

Noun

井(い) • (i) ^{←ゐ (wi)?}

1. well (water source)

Derived terms

• 井(い)の中(なか)の蛙(かわず)大海(たいかい)を知(し)らず (i no naka no kawazu taikai o shirazu): metaphor of a narrow world view based on limited experience (literally, "a frog in a well does not know the great ocean")

Proper noun

井(い) or 井(proper) • (i or proper) [[Category:Japanese
|い]]

1. a surname

Etymology 2

Kanji in this term
井
せい Grade: 4
on'yomi

From Middle Chinese 井 (tsjeng^X).

Noun

井(せい) • (sei) 

1. well, well curb
2. Well (Chinese constellation)

---

Korean

Etymology

From Middle Chinese 井 (MC tsjengX). Recorded as Middle Korean 져ᇰ〯 (cyěng) (Yale: cyeng) in Hunmong Jahoe (訓蒙字會 / 훈몽자회), 1527.

Hanja

Wikisource

井 (eumhun 우물 정 (umul jeong))

1. hanja form^? of 정 (“well (a hole sunk into the ground)”)

Compounds

Compounds

• 유정 (油井, yujeong)
• 정수 (井水, jeongsu)

References

• 국제퇴계학회 대구경북지부 (國際退溪學會 大邱慶北支部) (2007). Digital Hanja Dictionary, 전자사전／電子字典. [1]

---

Vietnamese

Han character

井: Hán Nôm readings: tỉnh

1. This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.