How to say "precise" in Japanese

Choosing the right word
  • 正確せいかくJLPT N3approx.Common
    na-adjective, nounCovers 'precise' in its basic sense of accurate and free of error — facts, figures, information that contain no mistakes. When you simply mean 'correct in every detail,' this is the word you want.
    この時計とけいの時間じかんは正確せいかくだ。↗
    This watch keeps correct time.
  • 明確めいかくJLPT N3approx.Common
    na-adjectiveTakes 'precise' to mean clear-cut and unambiguous rather than accurate — a precise instruction, definition, or purpose is one stated so definitely that it cannot be misunderstood.
    この語ごを明確めいかくに定義ていぎできますか。↗
    Can you clearly define this word?
  • 精密せいみつJLPT N1approx.Common
    na-adjective, nounThe word for 'precise' in technical and scientific contexts, where it implies fine, minute exactness — precision instruments, delicate measurements, detailed work. It stresses meticulous fineness rather than mere correctness.
    なぜならば、精密せいみつに検査けんさしても何なんか欠点けってんが現あらわれないほど美うつくしいものは存在そんざいしないからである。↗
    This is because there is nothing so beautiful that, even on close inspection, no defects will be found.
  • 厳密げんみつJLPT N1approx.Common
    na-adjectiveCovers 'precise' in the sense of strict and rigorous — a precisely defined term, a strict interpretation, or 'precisely speaking.' The emphasis is on rigor and allowing no vagueness.
    厳密げんみつな科学的かがくてき観点かんてんからは、歴史れきしは科学かがくとはいえない。↗
    From a strictly scientific point of view, history cannot be called a science.
  • 的確てきかくJLPT N2approx.Common
    na-adjective, nounUsed when 'precise' describes a judgment, assessment, or remark that is exactly right and to the point — the nuance is aptness, hitting the mark, rather than technical exactness.
    Such an accurate, lightning-quick reply. What can I say?

Choose 正確 for plain accuracy, 明確 for clarity and definiteness, 精密 for fine technical precision, 厳密 for strict rigor, and 的確 for judgments that are apt and on target.

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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