How to say "temperament" in Japanese

Choosing the right word
  • 性質せいしつJLPT N2approx.Common
    nounThe broad, neutral word for a person's nature or character; it covers temperament as part of how someone is overall, in ordinary descriptions of personality.
    彼かれは性質せいしつが頑固がんこだ。↗
    He is obstinate in disposition.
  • 資質ししつCommon
    nounEmphasizes innate qualities or aptitudes rather than everyday mood; choose it when 'temperament' means the inborn makeup that suits a person to something.
    彼かれは指導者しどうしゃの資質ししつを全すべて持もっていた。↗
    He had all the attributes of a leader.
  • 気質きしつJLPT N1approx.Common
    noun, noun (suffix)The word for temperament as an inborn disposition — the ingrained makeup that makes a person the kind of person they are.
    成功せいこう不ふ成功せいこうは気質きしつに左右さゆうされることが多おおい。↗
    Success often depends on one's temperament.
  • 気性きしょうCommon
    nounCovers a person's temper and emotional disposition, so it fits 'temperament' when the point is how someone's emotions and reactions run.
    彼かれの気性きしょうは手てに負おえない。↗
    He has an uncontrollable temper.
  • 調律ちょうりつCommon
    noun, suru verb, transitive verbNot about personality at all: this is the musical term for tuning an instrument, and it renders 'temperament' only in the technical sense of a tuning system.

For a person's temperament, choose among 性質, 気質 and 気性 by nuance; 資質 stresses innate qualities or aptitude, while 調律 belongs only to the musical sense of tuning.

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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