How to say "eager" in Japanese

Choosing the right word
  • 懸命けんめいCommon
    na-adjective, nounCovers eager as earnest, strenuous effort: someone applying themselves wholeheartedly to a task. It is the word for working or trying with all one's might, as in studying or training hard.
    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.
  • 切せつCommon
    na-adjective, nounSeldom the word you want for plain eagerness: it expresses earnest, ardent feeling, as in a heartfelt plea or wish. Think of intense, sincere longing rather than enthusiasm.
  • 熱心ねっしんJLPT N4approx.Common
    na-adjective, nounFor eager as keen, enthusiastic dedication to an activity, this is the word: an avid student or devoted worker who throws themselves into what they do with zeal.
    この本ほんは彼かれの熱心ねっしんな研究けんきゅうの成果せいかである。↗
    This book is a result of his enthusiastic research.
  • 躍起やっきCommon
    na-adjective, nounEager to the point of desperation: getting worked up or frantic about doing or obtaining something, often with a hint of going overboard. Not calm enthusiasm but overwrought keenness.
    ますます多おおくの人ひとが、その媒体ばいたいの双方向そうほうこう的てきな性質せいしつを利用りようしようと躍起やっきになっている。↗
    More and more people are rushing to make use of the interactive nature of the medium.
  • adverb (with と), suru verbEager as in itching to do something: a restless, impatient urge to get started that one can barely contain. Suits someone sorely tempted to jump in, for instance on seeing others already enjoying themselves.
    彼かれはそれを試ためしてみたくてうずうずしていた。↗
    He was panting to have a go at it.

Use 熱心 for keen enthusiasm and dedication, 懸命 for earnest hard effort, 「うずうず」 for itching impatience, 躍起 for frantic desperation, and 切 for ardent, heartfelt intensity.

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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