decisive

adjective

de·​ci·​sive di-ˈsī-siv 

1

: having the power or quality of deciding

The council president cast the decisive vote.

a decisive battle

2

: resolute, determined

a decisive manner

decisive leaders

a decisive editor

3

: unmistakable, unquestionable

a decisive superiority

decisively adverb

decisiveness noun

Synonyms

• bent (on or upon)
• bound
• determined
• do-or-die
• firm
• hell-bent (on or upon)
• intent
• out
• purposeful
• resolute
• resolved
• set
• single-minded

Choose the Right Synonym for decisive

conclusive, decisive, determinative, definitive mean bringing to an end.

conclusive applies to reasoning or logical proof that puts an end to debate or questioning.

conclusive evidence

decisive may apply to something that ends a controversy, a contest, or any uncertainty.

a decisive battle

determinative adds an implication of giving a fixed character or direction.

the determinative factor in the court's decision

definitive applies to what is put forth as final and permanent.

the definitive biography

Examples of decisive in a Sentence

You must be decisive and persistent to succeed in this competitive field.

I stood there wondering what to do, but my sister was more decisive and immediately went to the phone.

The fight ended with a decisive blow.

the decisive battle of the war

The poverty of his childhood played a decisive role in his adult life.

The meeting is seen as a decisive step toward a peace treaty.

Recent Examples on the Web

On the decisive sequence, Cates barely won a race to the puck at the red line, chipped it in the air, batted it forward with his glove and then lifted a backhander past Bobrovsky with two Panthers bearing down on him from behind. —Miami Herald, 14 Jan. 2025

Protecting the Future The rise of Red Note demands action—not panic, but thoughtful, decisive measures to safeguard people and democratic principles. —Jason Snyder, Forbes, 14 Jan. 2025

Putin is gambling that Russia can outlast Ukraine, believing that without decisive Western aid, Ukrainian morale and resources will collapse. —John Mac Ghlionn, Newsweek, 14 Jan. 2025

The decisive victory couldn’t have come at a better time for a team preparing for the second leg of a back-to-back against the feisty Detroit Pistons on Monday. —Kristian Winfield, New York Daily News, 12 Jan. 2025

Word History

Etymology

borrowed from Middle French & Medieval Latin; Middle French decisif, borrowed from Medieval Latin dēcīsīvus, from Latin dēcīsus, past participle of dēcīdere "to cut off, cut out, mark by cutting, settle, choose as a course of action" + -īvus -ive — more at decide

First Known Use

1584, in the meaning defined at sense 1

Phrases Containing decisive

• decisive action
• decisive/deciding/determining factor

Kids Definition

decisive

adjective

de·​ci·​sive di-ˈsī-siv 

1

: having the power to decide

the decisive vote

2

: unmistakable, unquestionable

a decisive victory

3

: marked by or showing decision

a decisive manner

decisively adverb

decisiveness noun