decisive

/dɪˈsaɪsɪv/
able to make decisions quickly

She was a decisive leader who never hesitated during crises.

She made firm and prompt choices without delay.


formal

Showing the ability to make decisions quickly and effectively.

The CEO's decisive action saved the company from bankruptcy.

The CEO acted quickly and effectively to prevent bankruptcy.

His decisive speech inspired the team to act immediately.

His clear and prompt speech motivated the team to take action.

Often used to describe people in leadership roles or critical situations.

Law
formal

Conclusive and leading to a clear outcome.

The judge's decisive ruling ended the lengthy legal battle.

The judge's final decision resolved the dispute conclusively.

In legal contexts, refers to a ruling that definitively settles a matter.

Medicine
formal

Having a strong or definite effect.

The treatment had a decisive impact on the patient's recovery.

The treatment produced a clear and significant improvement.

Describes treatments or interventions that produce unambiguous results.

Collocations

decisive actionprompt and effective actiondecisive victoryclear and overwhelming windecisive rolekey part in achieving a result

Related Phrases

decisive momentphrase
a critical point where a decision must be made

Pro Tip

Avoid redundancy

Do not pair 'decisive' with 'final' or 'ultimate'—'decisive' already implies conclusiveness (e.g., 'a decisive victory' is sufficient).

Gold Rule

Use for people and outcomes

Apply 'decisive' to people who act quickly (e.g., 'a decisive leader') or outcomes that are clear (e.g., 'a decisive result'). Avoid using it for objects or neutral processes.

Word Origin

From Latin *decisivus*, from *decidere* (to decide), meaning 'to cut off' or 'settle'. The prefix *de-* (down, away) + *caedere* (to cut).

Usage Notes

Commonly used to describe people who act promptly or outcomes that are clear-cut. Avoid overusing in casual contexts where 'firm' or 'clear' might suffice.

Word Breakdown

de-
prefix meaning 'down' or 'away'
prefix
+
-cis-
root meaning 'to cut'
root
+
-ive
suffix forming adjectives, meaning 'having the quality of'
suffix
English Dictionary