Decisive | Mean of decisive in English Dictionary

/dɪˈsaɪsɪv/

• able to make choices quickly and confidently
1. You must be decisive and persistent to succeed in this competitive field.
2. I stood there wondering what to do, but my sister was more decisive and immediately went to the phone.
3. a decisive leader
4. In emergency situations, one must be able to take decisive action. [=to act quickly and with confidence]
• causing something to end in a particular way
1. She cast the decisive [=deciding] vote.
2. The fight ended with a decisive blow.
3. the decisive battle of the war
4. The poverty of his childhood played a decisive role in his adult life.
5. The meeting is seen as a decisive step toward a peace treaty.
6. The decisive factor [=deciding factor] was cost.
7. His lack of experience was the decisive factor in my decision not to hire him.
• very clear and obvious
1. a decisive victory/win/advantage