決断|けつだんketsudan[0]heiban (flat)
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- noun, suru verb, transitive verbdecision; determination
Conjugation
| Dictionary form | 決断する(けつだんする) |
|---|---|
| Polite (masu) | 決断します(けつだんします) |
| Negative (nai) | 決断しない(けつだんしない) |
| polite (masen) | 決断しません(けつだんしません) |
| classical zu / nu | 決断せず・決断せぬ(けつだんせず・けつだんせぬ) |
| Past (ta) | 決断した(けつだんした) |
| polite (mashita) | 決断しました(けつだんしました) |
| Past negative (nakatta) | 決断しなかった(けつだんしなかった) |
| polite (masen deshita) | 決断しませんでした(けつだんしませんでした) |
| Te form | 決断して(けつだんして) |
| Potential | 決断できる(けつだんできる) |
| Passive | 決断される(けつだんされる) |
| Causative | 決断させる(けつだんさせる) |
| Causative passive | 決断させられる(けつだんさせられる) |
| Conditional (ba) | 決断すれば(けつだんすれば) |
| tara | 決断したら(けつだんしたら) |
| Volitional | 決断しよう(けつだんしよう) |
| polite (mashou) | 決断しましょう(けつだんしましょう) |
| Imperative | 決断しろ(けつだんしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym決定けっていNeutralA noun for the decision that has been made; it stresses the outcome, while 「決断」 stresses the resolve to commit to a choice without wavering.
- Synonym決心けっしんNeutralA noun for making up one's mind; it stresses inner resolve, while 「決断」 stresses making a decisive choice.
- Synonym決意けついWrittenA written word for a solemn, firm determination; it stresses firmness of will, while 「決断」 stresses decisiveness.
- Synonym決するけっするWrittenA written verb for deciding or settling something, as in 「雌雄を決する」 (deciding the winner).
- Synonym決めるきめるNeutralThe most common everyday verb for deciding; 「決断」 places more weight on boldness.
- Synonym判断はんだんNeutralA noun for judgment; it stresses reaching a conclusion through analysis, without the nuance of boldness.
- Related決議けつぎFormalA formal noun for a resolution passed at a meeting, as in 「国連決議」; 「決断」 is about personal decisiveness.
- Related議決ぎけつFormalA formal noun for a decision reached by a deliberative body such as a parliament after deliberation; legal and political usage.
- Related取り決めるとりきめるNeutralA verb for two parties to settle or agree on something, as in 「条件を取り決める」.
- Related思い立つおもいたつNeutralA verb for suddenly getting the idea to do something; it stresses the notion itself, while 「決断」 stresses decisively making the final call.
- Related思い定めるおもいさだめるWrittenA written and rather rare verb for firmly making up one's mind.
- Antonym優柔不断ゆうじゅうふだんNeutralA four-character idiom for being indecisive; it stands in direct contrast to 「決断」.
- Antonym躊躇ちゅうちょWrittenA written noun for hesitating; it is the opposite of the decisiveness of 「決断」.
Use 「決断」 for a firm, decisive choice made without wavering, as in 「決断力」. For the resulting decision use 「決定」; for inner resolve use 「決心」 or the written 「決意」; for formal group resolutions 「決議」 and 「議決」; for agreeing on terms 「取り決める」; for judgment 「判断」. The everyday verb is 「決める」, and the opposites are 「優柔不断」 and 「躊躇」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


