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English definition of “decisive”

decisive

adjective     /dɪˈsaɪ.sɪv/
B2 able to make decisions quickly and confidently, or showing this quality: You need to be more decisive. a decisive reply → Opposite indecisiveDecisions and deciding C1 strongly affecting how a situation will progress or end: These results could prove decisive in establishing the criminal's identity. a decisive role a decisive victoryDecisions and deciding decisively     /-li/ adverb C2 If we had acted earlier and more decisively (= more quickly and effectively) it might not have come to this.Decisions and deciding decisiveness     /-nəs/ noun [U] Decisions and deciding
(Definition of decisive adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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