How to say "liar" in Japanese

• 嘘つきうそつきJLPT N1approx.Common
  nounThe common word for a person who lies, covering both 'liar' and the milder 'fibber'; use it to describe someone, as in scolding a child who keeps making things up.
  もし嘘うそなら、彼女かのじょはうそつきだ。↗

  If that's false, she's a liar.
• ライアー
  nounThe loanword from English 'liar', meaning the same as 嘘つき; it is less common, so 嘘つき is usually the word you want when calling someone a liar.
• 偽り者いつわりもの
  nounCovers 'impostor' as much as 'liar': a deceiver who hides behind a false front. It is less common than 嘘つき, which is the usual word for an ordinary liar.
• 嘘つけうそつけ
  interjectionNot a noun but the colloquial retort "You're lying!" or "Yeah, right!", thrown back at something you do not believe; it can also serve as the exclamation "Liar!" in an argument.
• 嘘をつけうそをつけ
  interjectionThe same retort as 嘘つけ, with the particle を written out: "You're lying!" or "Yeah, right!". Like 嘘つけ it is an exclamation, not a noun for a person who tells lies.

「嘘つき」 is the common noun for a liar; 「偽り者」 covers 'impostor' as much as 'liar'; 「ライアー」 is the less common loanword; 「嘘つけ」 and 「嘘をつけ」 are the retort "You're lying!", not nouns.

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

• 嘘つきうそつきliar
• ライアーliar
• 偽り者いつわりものimpostor
• 嘘つけうそつけyou're lying
• 嘘をつけうそをつけyou're lying
• 偽者にせものimpostor