How to say "behaviour" in Japanese

Choosing the right word
  • 行動こうどうJLPT N3approx.Common
    suru verb, intransitive verb, no-adjectiveBehaviour as action or conduct — what a person actually does. The most general of these words, covering both everyday activity and how someone conducts themselves.
    彼かれは友人ゆうじんの行動こうどうに憤慨ふんがいした。↗
    He resented his friend's action.
  • 態度たいどJLPT N3approx.Common
    nounBehaviour as one's manner or bearing toward others — the attitude someone displays. Use it when 'behaviour' means how a person comes across, such as being rude, cold, or friendly, rather than what they do.
    私は彼かれの態度たいどが癪しゃくに障さわった。↗
    I was annoyed at his behavior.
  • 挙動きょどうCommon
    nounConduct or behaviour as observed by others — how a person moves, acts, and carries themselves. Narrower than behaviour in general: it describes outward conduct and bearing, not attitude or manners.
    警察けいさつは山田やまだの挙動きょどうを注視ちゅうししている。↗
    The police are closely watching Yamada's behaviour.
  • 振る舞いふるまいCommon
    nounThe way a person behaves or conducts themselves — one's manner of acting. Fits 'behaviour' when you mean how someone acts toward people, whether well or badly.
    よくもまあ、そんな振舞ふるまいができるもんだ。↗
    How dare you behave like that!
  • 行儀ぎょうぎJLPT N3approx.Common
    nounBehaviour in the sense of manners or propriety — whether someone is behaving properly, especially a child. It is not a general word for behaviour; it is behaviour as judged by standards of good manners.
    彼女かのじょは行儀ぎょうぎが極きわめて上品じょうひんである。↗
    She is quite decent in conduct.

Use 行動 for behaviour as what someone does, 態度 for manner or attitude shown toward others, 挙動 for outward conduct as observed by others, 「振る舞い」 for the way a person behaves, and 行儀 for behaviour judged by good manners.

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

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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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