How to say "butt" in Japanese

• 嬲り者なぶりもの
  nounThe figurative 'butt': a person who is the butt of jokes or the object of ridicule, a laughingstock. It never refers to a body part, and it is an uncommon word.
• おちり
  nounThe body-part 'butt' in children's language: a mild nursery word like 'bottom' or 'bum'. Typical context: a parent speaking with a small child.
• 太ももふとももCommon
  nounPrimarily this means 'thigh', the upper leg. As a rendering of 'butt' it is loose and colloquial, so for the buttocks themselves it is seldom the word you want.
• どんじり
  nounA derogatory word for the backside, equivalent to 'ass' or 'arse'; it insults the person you apply it to, so it fits crude or abusive talk. Usually written in kana alone.

For the body part, 「おちり」 is the children's 'bottom' and 「どんじり」 a derogatory 'ass'; 「太もも」 really denotes the thigh, 「嬲り者」 is only the figurative 'butt of jokes', and none is a neutral everyday option.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 嬲り者なぶりものobject of ridicule
• おちりbottom
• 太ももふとももbuttocks
• どんじりass