Translation guide
The English word 'butt' is a casual term for the buttocks. In Japanese, the most common equivalent is お尻 (oshiri), but there are many other words depending on formality, context, and nuance. This guide covers the most useful options for learners.
The most common, everyday word for 'butt' in casual conversation.
The standard, slightly polite but still casual word for buttocks. Used by all ages. Can also mean 'bottom' or 'rear'.
My butt hurts.
Wipe the baby's bottom.
A more blunt, sometimes vulgar version of お尻. Used in rough speech or compound words.
Can sound crude; お尻 is safer.
I got kicked in the butt.
Slang for 'butt' or 'ass'. Very casual, often used among friends or in rough speech.
Vulgar; avoid in polite settings.
He's got a big butt.
Hiragana version of お尻, often used in children's contexts or to soften the word.
I'll spank your bottom!
Formal or medical terms for buttocks.
The remaining end of a cigarette, pencil, etc.
The person or thing that is the object of a joke or criticism.
To interrupt a conversation or activity rudely.
To argue or come into conflict with someone.
The English phrasal verb 'butt in' does not translate directly using お尻. Use 口を挟む or 割り込む instead.
butt in (verbally)
お尻 is the standard, polite-enough word for buttocks. ケツ is slang and can be vulgar. Use お尻 in most situations, especially with people you don't know well.
My butt is sore from sitting too long.
タバコの尻
cigarette butt
話に割り込むな。
Don't butt into our talk.
上司とやり合った。
I butted heads with my boss.