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Decisive

/dɪˈsaɪsɪv/

Having the ability or quality to make choices quickly and with certainty, often resulting in a clear, definite effect.

Synonyms:

Our argument was short but decisive.

This accidental circumstance was the signal for some very decisive proceedings.

It was a decisive act to start writing.

From Latin decisivus, meaning determining; derived from decidere which means to decide. Originated in the 17th century.

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