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Word

decisive

adjective C1
UK /dɪˈsaɪsɪv/
US /dɪˈsɪsɪv/

Meanings

adjective

able to make decisions quickly and confidently

decisive: able to make decisions quickly and confidently
adjective

having a final and very important effect on the result of something

decisive: having a final and very important effect on the result of something

Definition

Able to make choices quickly and confidently, often leading to clear results.

If someone is decisive, they can make a firm decision without unnecessary delay or hesitation. This often helps them take effective action and move a situation forward. The word can also describe an action, moment, or factor that has a strong and final effect on an outcome.

Examples

  • I was decisive about switching teams once I saw how the project scope had changed.
  • You sound decisive, so the group will probably follow your recommendation.
  • He stayed calm and decisive during the outage, delegating tasks with clear priorities.
  • She made a decisive argument in the debate, and the room’s mood shifted immediately.
  • They were decisive in the final minutes, turning a messy discussion into a workable plan.

Common mistake

Learners often confuse "decisive" (able to decide) with "decided" (already having made up one’s mind).