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English definition of “decisive”

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decisive

adjective uk   /dɪˈsaɪ.sɪv/ us  
B2 able to make decisions quickly and confidently, or showing this quality: You need to be more decisive. a decisive reply
Opposite
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 victory
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decisively
adverb uk   /-li/ us  
C2 If we had acted earlier and more decisively (= more quickly and effectively) it might not have come to this.
decisiveness
noun [U] uk   /-nəs/ us  
(Definition of decisive from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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