How to say "traitor" in Japanese

• 売国奴ばいこくどCommon
  nounCovers only betrayal of one's own country, with a strongly insulting tone: it brands someone as having sold the nation out, typically to an enemy or for personal gain.
• 裏切り者うらぎりものCommon
  nounThe general-purpose word: it covers betrayal of any trust — a friend, an ally, a cause — as well as treachery to one's country, and is what you reach for when no special nuance is needed.
  裏切うらぎり者しゃは国くにを敵てきに売うった。↗

  The traitor betrayed his country to the enemy.
• 非国民ひこくみんCommon
  nounLabels someone as unpatriotic or acting against the nation rather than naming a concrete act of betrayal; it is an accusation condemning a person's lack of loyalty to the country.
• 賊ぞくCommon
  nounIts core senses are rebel and insurgent — an armed opponent of the state — so 'traitor' is only a secondary gloss; for betrayal in general it is seldom the word you want.

Use 「裏切り者」 for betrayal of any trust, 売国奴 for a strongly derogatory accusation of selling out one's country, 非国民 for condemning someone as unpatriotic, and 賊 mainly for rebels rather than traitors.

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

• 売国奴ばいこくどtraitor (to one's country)
• 裏切り者うらぎりものbetrayer
• 非国民ひこくみんunpatriotic person
• 国賊こくぞくtraitor (to one's country)
• 背信者はいしんしゃtraitor
• 乱臣らんしんtraitor
• 逆賊ぎゃくぞくrebel
• 佞臣ねいしんcrafty courtier
• 反逆者はんぎゃくしゃrebel
• 反逆人はんぎゃくにんrebel
• 逆徒ぎゃくとrebel
• 賊子ぞくしrebellious child
• 乱臣賊子らんしんぞくしrebels against one's lord and one's parents
• 謀反人むほんにんrebel
• 賊臣ぞくしんrebel
• 賊ぞくrebel
• ユダbetrayer