気性|きしょうkishou[0]heiban (flat)

1. noundisposition; temperament; temper; naturealso written as 気象
   彼かれの気性きしょうは手てに負おえない。↗

   He has an uncontrollable temper.

• Synonym気質きしつNeutralInnate emotional tendencies; also a suffix for a type's character, as in 「職人気質」. 気性 focuses on whether one's temper is fierce or mild.
• Synonym天性てんせいWrittenWritten/formal: one's inborn nature or gifts. 気性 typically describes a fierce, strong-willed temper.
• Synonym本性ほんしょうNeutralA person's true, inherent character, often in 「本性を現す」; usually framed as good or evil. 気性 concerns the temper's fierceness or mildness.
• Synonym気心きごころNeutralMostly in 「気心が知れる」, knowing each other's dispositions well; not used alone for a fierce temper.
• Synonym性分しょうぶんNeutralInnate disposition, often as 「〜な性分だ」 and often about oneself. 気性 more often describes the strength of one's temper.
• Synonym心根こころねWrittenWritten/formal: what lies deep in a person's heart, judged as good or bad. 気性 refers to the temper itself.
• Synonym性根しょうねCasualColloquial: a person's fundamental character, as in 「性根を叩き直す」; can also mean perseverance. 気性 means temper.
• Synonym気きNeutralCovers mood, mind and spirit in countless uses. 気性 specifically means one's innate temper.
• Synonym資質ししつWrittenWritten/formal: innate abilities and qualities, often used to judge fitness for a profession. 気性 means temper.
• Synonym性格せいかくNeutralThe most general word for character; can also describe things. 気性 stresses one's innate, fierce-or-mild temper.
• Synonym性質せいしつNeutralA person's disposition, but also the properties of things. 気性 covers only the temper of people or animals.
• Synonym性情せいじょうWrittenWritten/formal: character and feelings together. 気性 centers on temper and is the everyday word.
• Synonym気稟きひんWrittenLiterary and almost never used; for innate temperament say 「気性」 or 「気質」.
• Synonym性しょうNeutralInnate nature, mostly in set phrases like 「性に合う」. 気性 specifically means temper.
• Related気きNeutralCovers mood, mind and spirit in countless uses. 気性 specifically means one's innate temper.
• Related柄がらNeutralFor character, mostly in 「柄が悪い」 or as the suffix 「人柄」; also means pattern or build. 気性 means temper.
• Related持ち前もちまえNeutralSomething inborn, usually as a modifier, as in 「持ち前の明るさ」. 気性 is the temper itself.
• Related素質そしつNeutralInnate talent or aptitude, as in 「素質がある」. 気性 is about temper, not ability.
• Related気立てきだてNeutralUsed to praise a kind, gentle nature, as in 「気立てのいい娘」. 気性 suggests a fierce or quick temper.

For character in general, 「性格」 is the default. Use 「気性」 for an innate temper, especially a fierce or quick one, as in 「気性が荒い」; to praise a kind nature, 「気立て」. 「気質」 covers innate emotional makeup and the suffix 「職人気質」; 「本性」 and 「心根」 are about true, often good-or-evil character; 「素質」 and 「資質」 are about talent, not temper.

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

1. 生うまれつきの性質せいしつや性格せいかく。気質きしつ。