English Reference
Adverb

decisively

adv. manner
B2 Upper Intermediate US /dɪˈsaɪsɪvɫi/ UK /dɪsˈaɪsɪvli/ de·ci·sive·ly

adv.to do something in a quick, sure, and confident way. You use this when someone makes a choice or takes action without any doubt.

adv.in a manner that shows the ability to make decisions quickly and confidently; with conclusive results. Typically modifies verbs of action or decision-making.


SIMPLE

She acted decisively to solve the problem.

CONTEXTUAL

The manager acted decisively to stop the leak before it caused any permanent damage to the office.

COMPLEX

The commander moved decisively to secure the perimeter, effectively ending the standoff before negotiations could break down further.

Usage

Typically follows the verb it modifies or the direct object.

The warning signs were visible, but the international community failed to act decisively.

UN News· 25 Aug 2026

But neither has been able to decisively defeat the other.

Al Jazeera· 17 Aug 2026
This entry
Level B2 · Upper Intermediate
Frequency Occasional
Updated