うんこ

うんこ
noun
poop; poo (casual/childish)
1. poop; poo — a casual, childlike word for feces
A casual, childlike term for feces. Widely used by young children, and by adults speaking to children or in humorous, unrefined, or informal contexts. Roughly equivalent in register to English 'poop' or 'poo'. Written in hiragana or katakana; there is no kanji form in common use.
うんこがしたい。
I need to poop.
(いぬ)のうんこを片付(かたづ)けた。
I cleaned up the dog's poop.
子供(こども)たちはトイレで「うんこ」と()って大笑(おおわら)いしていた。
The kids were roaring with laughter saying 'poop!' in the bathroom.

A casual, unrefined word for feces. Related to the verb-like grunt うん ('mm, unh') uttered during defecation — the -こ suffix is a common diminutive/childish ending (as in (ねこ) → {にゃんこ}).

REGISTER:

  • Strongly casual and childlike. Can sound humorous, unrefined, or vulgar depending on context — fine among close friends or family and unremarkable from a child, but inappropriate in formal, polite, or medical settings.
  • In medical or formal settings, use 便(べん) ('stool') or 大便(だいべん) ('feces, bowel movement').
  • In mild casual register, {うんち} is even softer and more childish.

COMMON COLLOCATIONS:

  • うんこをする: to poop
  • うんこがしたい: to need to poop / feel like going number two
  • うんこが()る: to have a bowel movement (plain)
  • (いぬ)のうんこ: dog poop
  • うんこを()む: to step in poop

SIMILAR WORDS:

  • うんち: poo/poop — even softer, more childish variant.
  • 大便(だいべん): stool/feces — formal, clinical term.
  • 便(べん): stool — medical term, used in compounds like 便秘(べんぴ) ('constipation'), 軟便(なんべん) ('loose stool').
  • (くそ) / (ふん): dung/excrement — also used as a swear word ('damn/shit') in the reading くそ.

NOTES ON WRITING:

  • Written in hiragana (うんこ) most often, sometimes in katakana (ウンコ) for comic or emphatic effect.
  • No standard kanji.