How to say "zeal" in Japanese

Choosing the right word

熱意ねついJLPT N1approx.Common
nounCovers zeal as earnest, dedicated enthusiasm directed at work, study, or a goal; the emphasis is on sincere commitment rather than emotional heat.
彼女かのじょは自分じぶんの仕事しごとにぜんぜん熱意ねついを示しめさない。↗
She shows no zeal for her work.
情熱じょうねつJLPT N1approx.Common
nounZeal as burning, emotional passion; stronger and more heartfelt than 熱意, it suits ardent devotion to a cause or creative work.
彼かれの私に対たいする情熱じょうねつはさめない。↗
His passion for me doesn't cool.
熱血ねっけつCommon
nounLiterally 'hot blood'; it describes a fervent, hot-blooded spirit or temperament, and is seldom the noun you want for zeal itself — think of burning enthusiasm embodied in a person.
熱量ねつりょうJLPT N1approx.Common
nounTreats zeal as a quantity: the degree or amount of enthusiasm and energy someone pours into an activity; useful when gauging or comparing how much drive is there.

Use 熱意 for earnest, dedicated enthusiasm toward a task, 情熱 for fiery emotional passion, 熱血 for a hot-blooded fervent temperament rather than zeal itself, and 熱量 when treating enthusiasm as a measurable degree of energy.

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

Japanese equivalents

熱意ねついzeal
情熱じょうねつpassion
ジールzeal
気込みきごみenthusiasm
熱ねつzeal
熱血ねっけつzeal
熱量ねつりょう(degree of) enthusiasm
力こぶちからこぶzeal
篤志とくしinterest (in public welfare, social enterprise, etc.)

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