入

入 U+5165, 入 CJK UNIFIED IDEOGRAPH-5165 ← 兤 [U+5164] CJK Unified Ideographs 兦 → [U+5166]

⼊ U+2F0A, ⼊ KANGXI RADICAL ENTER ← ⼉ [U+2F09] Kangxi Radicals ⼋ → [U+2F0B]

Traditional
Simplified
Japanese
Korean

Stroke order

入 (Kangxi radical 11, 入+0, 2 strokes, cangjie input 人竹 (OH), four-corner 8000₀, composition ⿹乀丿)

1. Kangxi radical #11, ⼊.

• Appendix:Chinese radical/入
• 叺 圦 扖 𣱿 込 杁 釞 魞 鳰 內 㐈 屳 㠳 籴 肏 䓥 㞥 㚒 㒼

• Kangxi Dictionary: page 125, character 32
• Dai Kanwa Jiten: character 1415
• Dae Jaweon: page 266, character 18
• Hanyu Da Zidian (first edition): volume 1, page 102, character 1
• Unihan data for U+5165

• 入 on Wikidata.Wikidata

trad.		入
simp. #		入

Ideogram (指事) - an arrowhead indicating "to enter".

Compare 人 (rén).

From Proto-Sino-Tibetan *nup ~ nip. Cognate with Tibetan ནུབ (nub, “to fall (gradually), sink, to set; to decay, to decline”) and Burmese နိပ် (nip, “to decline (e.g. price); to be suppressed, to settle, to be quelled”).

Chinese characters belonging to the same word family include:

• 納 (OC *nuːb, “to make enter”)
• 內 (OC *nuːbs, “inside”)
• 軜 (OC *nuːb, “reins on the inside of the horse”)
• 妠 (OC *nuːms, *nuːb, *rnoːd, “to marry (a girl)”)
• 躡 (OC *neb, “to tiptoe, tread”)
• 攝 (OC *neːb, *ʔnjeb, “to take in, photograph, grasp”)
• 鑷 (OC *neb, “tweezers, forceps”)
• and potentially Cantonese 擸 (laap3, “to bring together, to collect”)

The regular Mandarin pronunciation as predicted from Middle Chinese is rì. The irregular sound change is for taboo reasons - to avoid homophony with its derived vulgar meaning "to enter > to have sexual intercourse", nowadays represented by 日 (rì).

入

1. to enter; to go into

   入嚟坐啦！ [Cantonese]  ―  jap⁶ lai⁴ co⁵ laa¹! [Jyutping]  ―  Come in and sit!

   入春  ―  rùchūn  ―  to enter into spring

   病從口入，禍從口出 [MSC, trad.]
   病从口入，祸从口出 [MSC, simp.]

   bìng cóng kǒu rù, huò cóng kǒu chū [Pinyin]

   illness comes in via the mouth because of food and trouble goes out via the mouth because of words

   Synonym: 進 / 进 (jìn)

   Antonym: 出 (chū)

2. to join; to become a member of

   加入  ―  jiārù  ―  to join

   入黨／入党  ―  rùdǎng  ―  to join a political party

3. (literary) to accept; to admit
4. (literary) to pay
5. income

   收入  ―  shōurù  ―  income

   歲入／岁入  ―  suìrù  ―  annual income

6. to confirm; to agree

   入情入理  ―  rùqíngrùlǐ  ―  to be fair and reasonable

7. to arrive (at); to attain
8. (literary) to enter the imperial government and become an official
9. (telephony) to get through

   Synonym: 通

10. (Cantonese) in; inside

    Antonym: 出 (Cantonese)

    入面 [Cantonese]  ―  jap⁶ min⁶ [Jyutping]  ―  inside

11. (Cantonese) to stock up on
12. (Cantonese) to submit

    入表 [Cantonese]  ―  jap⁶ biu² [Jyutping]  ―  to submit a form to the government

13. (Cantonese) to input; to enter; to type into a computer

    入分 [Cantonese]  ―  jap⁶ fan¹ [Jyutping]  ―  to input scores

    入資料／入资料 [Cantonese]  ―  jap⁶ zi¹ liu^6-2 [Jyutping]  ―  to enter data

14. (Cantonese, Hokkien) to put something into

    入信封 [Cantonese]  ―  jap⁶ seon³ fung¹ [Jyutping]  ―  (please add an English translation of this usage example)

    入袋 [Cantonese]  ―  jap⁶ doi^6-2 [Jyutping]  ―  (please add an English translation of this usage example)

15. (literary, dialectal Mandarin, dialectal Wu, vulgar) to fuck; to have sexual intercourse

    Synonym: 日

16. (Chinese phonetics) short for 入聲／入声 (rùshēng, “the checked tone”)

    陽入／阳入  ―  yángrù  ―  light checked tone

17. (retail, usually after a number and optional classifier) piece (inside packaging); n-pack

    10入  ―  10 rù  ―  10-pack

    100枚入  ―  100 méi rù  ―  100 pieces

    6罐入  ―  6 guàn rù  ―  6 cans pack

    10入/盒,5元/入  ―  10 rù / hé, 5 yuán / rù  ―  10 pieces per box, 5 yuan per piece

The tones (of Chinese) in Mandarin · 聲調 / 声调 (shēngdiào) (layout · text)
	平仄 (píngzè)		平 (píng) 平聲 / 平声 (píngshēng)		仄 (zè) 仄聲 / 仄声 (zèshēng)
	平上去入 (píngshǎngqùrù) 四聲 / 四声 (sìshēng)		平 (píng) 平聲 / 平声 (píngshēng)		上 (shǎng) 上聲 / 上声 (shǎngshēng)		去 (qù) 去聲 / 去声 (qùshēng)		入 (rù) 入聲 / 入声 (rùshēng)
標調方法 / 标调方法 (biāodiào fāngfǎ) 標調法 / 标调法	四角標調法 / 四角标调法		꜀◌		꜂◌		◌꜄		◌꜆
	[Term?]		◌〪		◌〫		◌〬		◌〭
	傍點 / 傍点		∅		◌〮		◌〯		∅
	四聲八調 / 四声八调		陰平 / 阴平 (yīnpíng)	陽平 / 阳平 (yángpíng)	陰上 / 阴上 (yīnshǎng)	陽上 / 阳上 (yángshǎng)	陰去 / 阴去 (yīnqù)	陽去 / 阳去 (yángqù)	陰入 / 阴入 (yīnrù)	陽入 / 阳入 (yángrù)
	陰 / 阴 (yīn)	陽 / 阳 (yáng)
標調方法 / 标调方法 (biāodiào fāngfǎ) 標調法 / 标调法	四角標調法 / 四角标调法		꜀◌	꜁◌	꜂◌	꜃◌	◌꜄	◌꜅	◌꜆	◌꜇

The tones (of Standard Mandarin) in Mandarin · 聲調 / 声调 (shēngdiào) (layout · text)
四聲 / 四声 (sìshēng)	陰平 / 阴平 (yīnpíng) 一聲 / 一声		陽平 / 阳平 (yángpíng) 二聲 / 二声 (èrshēng)		上聲 / 上声 (shǎngshēng) 三聲 / 三声 (sānshēng)		去聲 / 去声 (qùshēng) 四聲 / 四声 (sìshēng)		輕聲 / 轻声 (qīngshēng)

• “入”, in 漢語多功能字庫 (Multi-function Chinese Character Database)‎^[2], 香港中文大學 (the Chinese University of Hong Kong), 2014–

(First grade kyōiku kanji)

1. to enter
2. to insert

• Go-on: にゅう (nyū, Jōyō)^{←にふ (nifu, historical)}
• Kan-on: じゅう (jū)^{←じふ (zifu, historical)}
• Kan’yō-on: じゅ (ju)、にっ (ni')^{←にふ (nifu, historical)}
• Kun: いる (iru, 入る, Jōyō)、いり (iri, 入り)、いれる (ireru, 入れる, Jōyō)、はいる (hairu, 入る, Jōyō)^{←はひる (fafiru, 入る, historical)}、しお (shio)^{←しほ (sifo, historical)}
• Nanori: いり (iri)、いる (iru)、しほ (shiho)、なり (nari)

Kanji in this term
入
い(り) Grade: 1
kun'yomi

The 連(れん)用(よう)形(けい) (ren'yōkei, “stem or continuative form”) of the verb 入(い)る (iru, “to go in, to be in”)..^[1][2][3][4]

Attested as a standalone noun since the early 1200s.^[2]

• (Tokyo) いり [ìrí] (Heiban – [0])^[3][4][5]
• IPA^(key): [iɾʲi]

入(いり) • (iri) 

1. [from early 1200s] entering, going in
2. [from 1693] setting, such as a sunset or moonset (from the idea of the sun or moon going into the horizon)
3. [from 1441] the beginning or first day of a period of time
4. [date unclear] income, takings

   Synonym: 収入 (shūnyū)

5. [from 1774] a subtotal or portion of some larger payment amount

   Synonym: 内金 (uchikin)

6. [from 1929] an expense, an amount needed
7. [from 1675] the amount of people or things that fit into a space: capacity; admission, admittance

   Synonyms: 容量 (yōryō, capacity), 入場者数 (nyūjō shasū, admission, number of people who have entered)

8. [date uncertain] "on" switch, the "on" position for a switch

   Antonym: 切 (kiri)

Kanji in this term
入
しお Grade: 1
kun'yomi

入(しお) • (-shio) 

1. (archaic) counter for soakings (of fabric in a dye)

From Middle Chinese 入 (MC nyip).

• (SK Standard/Seoul) IPA^(key): [ip̚]
• Phonetic hangul: [입]

Wikisource

入 (eumhun 들 입 (deul ip))

1. hanja form^? of 입 (“enter”)
2. hanja form^? of 입 (“come in (to); join”)

• 국제퇴계학회 대구경북지부 (國際退溪學會 大邱慶北支部) (2007). Digital Hanja Dictionary, 전자사전／電子字典. [3]

入: Hán Việt readings: nhập^[1][2][3]
入: Nôm readings: nhập^[2][3], nhạp^[3][4], nhấp^[1], nhắp^[1], vào^[1], nhép^[3], nhẹp^[3]

1. chữ Hán form of nhập
   1. to enter; to join
   2. |Kangxi radical 11—‘enter’