Translation guide
The English word 'decisive' can describe a person who makes decisions quickly and firmly, an action or event that settles an outcome, or a manner that is clear and definite. This guide helps learners express these nuances naturally in Japanese.
He is a decisive leader.
Describes someone who acts decisively without overthinking. Often used for personal decisions or actions.
She is decisive, so she quickly decided to change jobs.
A formal, literary term meaning resolute and decisive. Rare in everyday conversation.
Decisive measures are required.
To describe something that determines a final result or resolves a situation conclusively.
The most common translation for 'decisive' in the sense of determining an outcome. Used for factors, moments, victories, etc.
That evidence was decisive.
Refers to the deciding factor or the final blow that settles something. Often used in contexts like games, arguments, or decisions.
A dramatic phrase meaning 'to decide one's fate'. Used for life-changing events.
To describe a way of speaking or acting that shows firmness and leaves no doubt.
Means firm, resolute. Often used with attitude, refusal, or action.
He said in a decisive tone.
An adverb meaning clearly, flatly, once and for all. Used with verbs like 言う (say) or 断る (refuse).
She refused decisively.
Means clearly, distinctly. Less forceful than きっぱりと, but still conveys a clear, unambiguous manner.
He showed a decisive attitude.
決定的 is used for things that determine an outcome (decisive factor, decisive victory). 決断力がある is used for people who are decisive in making decisions. Do not confuse them.
He is decisive (as a person).
That goal was decisive (it decided the game).
The direct translation 決定的な人 is unnatural. Use 決断力がある人 or 思い切りがいい人 instead.
I missed the decisive moment.
彼の経験が決め手となった。
His experience was the decisive factor.
That battle was a decisive one that determined our fate.