適切|てきせつtekisetsu[0]heiban (flat)

1. na-adjective, nounappropriate; suitable; fitting; apt; proper; right; pertinent; relevant
   「行いった」というのが適切てきせつな言葉ことばだ。↗

   "Performed" is the right word.

• Synonym適当てきとうNeutralAlso means perfunctory or careless — 「適当に答える」 is a half-hearted answer. Even for 'appropriate' it can sound sloppy; use 「適切」 to be unambiguous.
• Synonym適正てきせいNeutralFair and reasonable, often for prices and quantities as in 「適正価格」; stresses meeting a standard rather than fitting a situation.
• Synonym妥当だとうNeutralReasonable and defensible, as in 「妥当な判断」; focuses on the soundness of judgments and conclusions rather than overall fit.
• SynonymふさわしいNeutralBefitting one's status or the occasion, as in 「その場に相応しい服装」; the key idea is being matched to the setting.
• Synonym手ごろてごろNeutralHandy and moderate in size or price, as in 「手ごろな値段」; about practical convenience and affordability.
• Synonym正しいただしいNeutralCorrect or right, as in 「正しい答え」; about right versus wrong, while 「適切」 is about suitability.
• Synonym的確てきかくNeutralAccurate and on target, as in 「的確な指示」; stresses precision rather than general fitness.
• Synonym適宜てきぎNeutralMostly an adverb: 'as appropriate', adjusting to circumstances, as in 「適宜休憩をとる」; stresses discretion.
• Synonym似つかわしいにつかわしいNeutralBecoming or well matched, as in 「彼に似つかわしい仕事」; typically pairs a person with a thing.
• Synonym順当じゅんとうNeutralNatural and to be expected, as in 「順当に勝ち進む」; stresses following the expected course.
• SynonymしかるべきWrittenPre-noun word for 'due' or 'the proper (steps, person)', as in 「然るべき措置」「然るべき人」; written/formal prose.
• Synonym好適こうてきWrittenWritten word for 'ideal for the purpose', as in 「好適な環境」; mostly in explanatory or technical prose.
• SynonymうってつけCasualColloquial and emphatic: 'just perfect for', as in 「打ってつけの仕事」; stronger than 「適切」.
• Synonym至当しとうWrittenWritten word meaning perfectly proper, only natural; rare today — say 「適切」 or 「妥当」 in everyday speech.
• Related適任てきにんNeutralUsed only for a person suited to a post or task, as in 「彼が適任だ」; it matches people to jobs, nothing else.
• Related相応そうおうNeutralCommensurate with something, as in 「年相応」「それ相応の報酬」; stresses being on a par with the conditions.
• RelatedよろしいFormalThe formal counterpart of 「よい」, meaning 'that will do / is fine', as in 「これで宜しいですか」.
• Related良いよいNeutralThe most common word for 'good' or 'fine'; far broader than 「適切」, which is specifically about fitting the situation.
• Related十分じゅうぶんNeutralSufficient or ample, as in 「十分な時間」「十分な注意」; about quantity and degree being enough, not about being appropriate.
• RelatedいいCasualColloquial form of 「良い」; a general 'good/fine' for casual settings, not the precise 'appropriate' of 「適切」.
• Related公正こうせいNeutralFair and impartial, as in 「公正な判断」; stresses lack of bias, while 「適切」 stresses exact fitness.
• Related公明正大こうめいせいだいWrittenWritten four-character idiom for open, fair and upright conduct; about character, not whether an action is fitting.
• RelatedフェアNeutralLoanword meaning fair and aboveboard, as in 「フェアプレー」; also a noun for a trade fair.
• Related正当せいとうNeutralJustifiable and legitimate, as in 「正当な理由」「正当防衛」; often about legal or moral standing.
• Related合目的ごうもくてきWrittenWritten word meaning 'serving the purpose'; mostly in philosophy and academic writing.
• Related分相応ぶんそうおうNeutralWithin one's station or means, as in 「分相応な暮らし」; stresses not overreaching one's position.
• Antonym不適切ふてきせつNeutralThe direct antonym: inappropriate, as in 「不適切な発言」.
• Antonym不当ふとうNeutralUnfair or unjustified, as in 「不当な扱い」; opposes both 「適切」 and 「正当」.

Use 「適切」 for something that fits the situation exactly. Say 「相応しい」 for befitting one's status or the occasion, 「妥当」 for a sound judgment, 「適正」 for fair prices or quantities, and 「的確」 for pinpoint accuracy. 「適当」 can suggest carelessness, so prefer 「適切」 when you clearly mean appropriate. The antonyms are 「不適切」 and 「不当」.

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

1. ぴったりとあてはまること。よく適合てきごうすること。