How to say "casually" in Japanese

Choosing the right word
  • ふとJLPT N3approx.Common
    adverbCovers 'casually' in the sense of doing something spontaneously and without premeditation, as when a thought suddenly crosses your mind or you incidentally notice something. It describes unplanned moments, not a relaxed manner.
    彼かれはそれを見みるとふと魔まがさして盗ぬすんだ。↗
    The sight tempted him to steal.
  • たまたまJLPT N3approx.Common
    adverbThis is really about coincidence: something happening by chance, or you happening to be in a certain place. It is seldom the word you want for a casual manner of speaking or acting.
    通とおりを歩あるいていたとき、私はたまたま旧友きゅうゆうに出会であった。↗
    Walking along the street, I happened to meet my old friend.
  • adverbCovers 'casually' when you bring something up in passing without stating it outright, dropping a hint or sounding someone out. The remark feels casual because it is made indirectly rather than head-on.
    彼かれの手紙てがみはその事件じけんにそれとなくふれている。↗
    His letter alludes to the event.

Use 「ふと」 for actions or thoughts that occur spontaneously, 「たまたま」 for things that happen by pure chance, and 「それとなく」 for raising a topic indirectly, as if in passing.

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

Japanese equivalents
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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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