How to say "earnest" in Japanese

Choosing the right word
  • 懸命けんめいCommon
    na-adjective, nounEarnest as wholehearted, strenuous effort: it describes someone eagerly striving and trying their hardest, pouring energy into work, study, or whatever they have taken on.
    父ちちは私が懸命けんめいに働はたらかなければならないと言いった。↗
    My father said that I must work hard.
  • 真面目まじめJLPT N4approx.Common
    na-adjective, nounEarnest as a settled trait of character: a serious, sober person who does not fool around, approaches work and study in earnest, and is grave about their responsibilities.
    サムは仕事しごとに関かんしてまじめです。↗
    Sam is serious about his work.
  • 真剣しんけんJLPT N3approx.Common
    na-adjectiveEarnest in the sense of being in earnest about something: a grave, wholehearted, no-nonsense attitude, the opposite of joking or treating the matter half-heartedly.
    ジョージは勉強べんきょうに真剣しんけんでない。↗
    George is not serious about his study.
  • 切実せつじつJLPT N1approx.Common
    na-adjective, nounEarnest as felt emotion rather than behavior: it describes wishes, hopes, or pleas that are keenly, acutely felt — earnest in the sense of heartfelt and pressing.
  • 切せつCommon
    na-adjective, nounA marginal choice for 'earnest': it points to ardent, eager intensity of feeling, but it is seldom the word you actually want when saying 'earnest' — one of the others will serve better.

Choose 懸命 for earnest effort, 真面目 for an earnest character, 真剣 for an earnest, wholehearted attitude toward the matter at hand, 切実 for keenly felt earnest wishes, and treat 切 as a marginal, ardent alternative.

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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