うんこ

Japanese

Etymology

From うん (un, the sound made when straining) +‎ こ (-ko, diminutive nominalizer).^[1]^[2]

Pronunciation

(Tokyo) うんこ [úꜜǹkò] (Atamadaka – [1])^[2]
IPA^(key): [ɯ̟̃ŋko̞]

Noun

うんこ • (unko)

(childish) poop, doo-doo, number two
- 1996 February 20 [1988 February 15], Mitsuru Adachi, “交差点前 [In Front of the Intersection]”, in SHORT(ショート) PROGRAM(プログラム) [SHORT PROGRAM], 25th edition, volume 1 (fiction), Tokyo: Shogakukan, →ISBN, page 57:
  
  どこ行(い)くんだよ？克(かつ)明(あき)。
  Doko ikun da yo? Katsuaki.
  Where you going, Katsuaki?
  ウンコ！
  Unko!
  Number two!
- 2010 January 9, Hideaki Sorachi, “第(だい)二(に)百(ひゃく)七(しち)十(じゅう)五(ご)訓(くん)　捜(さが)しものをする時(とき)はそいつの目(め)線(せん)になって捜(さが)せ [Lesson 275: When You Look for Something, Look from Its Viewpoint]”, in 銀(ぎん)魂(たま) [Silver Soul], volume 32 (fiction), Tokyo: Shueisha, →ISBN:
  
  …俺(おれ)達(たち)？まさか…お前(まえ)もここで立(た)ちションした人(にん)…間(げん)？
  …Oretachi? Masaka… omae mo koko de tachishonshita nin…gen?
  …We? Hold on… did you pee here when you were hu…man too?
  立(た)ちションじゃない　ウンコだ
  Tachishon ja nai unko da
  It wasn’t pee, it was a dump

Usage notes

An informal and somewhat childish word; compare the more formal 大便 (daiben).
While うんこ (unko) is sometimes given as a literal translation of English interjection shit! as an expression of displeasure, this is inaccurate, as unko! sounds more like someone saying “Oh poop!” or “Oh doo-doo!” in English. Rather, the vulgar くそ (kuso, “shit, excrement”) or the less vulgar ちぇ (che, onomatopoeic interjection of displeasure) may be used, while the most common expression of displeasure is しまった (shimatta, “oops, uh-oh”, usually when it is one's own fault).

Verb

うんこする • (unko suru) suru (stem うんこし (unko shi), past うんこした (unko shita))

(childish) to poop, to poo, to go number two

Conjugation

Conjugation of "うんこする" (See Appendix:Japanese verbs)
Katsuyōkei ("stem forms")
Mizenkei ("imperfective")	うんこし	unko shi
Ren’yōkei ("continuative")	うんこし	unko shi
Shūshikei ("terminal")	うんこする	unko suru
Rentaikei ("attributive")	うんこする	unko suru
Kateikei ("hypothetical")	うんこすれ	unko sure
Meireikei ("imperative")	うんこせよ¹ うんこしろ²	unko seyo¹ unko shiro²
Key constructions
Passive	うんこされる	unko sareru
Causative	うんこさせるうんこさす	unko saseru unko sasu
Potential	うんこできる	unko dekiru
Volitional	うんこしよう	unko shiyō
Negative	うんこしない	unko shinai
Negative continuative	うんこせず	unko sezu
Formal	うんこします	unko shimasu
Perfective	うんこした	unko shita
Conjunctive	うんこして	unko shite
Hypothetical conditional	うんこすれば	unko sureba

¹ Written imperative
² Spoken imperative

See also

うんち (unchi, “poop”)
糞(くそ) (kuso, “shit”)
大(だい)便(べん) (daiben, “stool”)

References

^ Shōgaku Tosho (1988), 国語大辞典（新装版） [Unabridged Dictionary of Japanese (Revised Edition)] (in Japanese), Tōkyō: Shogakukan, →ISBN
↑ ^2.0 ^2.1 Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN