decisive

 
Pronunciation: /dɪˈsʌɪsɪv/

adjective

  • 1settling an issue; producing a definite result: the archers played a decisive part in the victory a decisive battle
  • 2having or showing the ability to make decisions quickly and effectively: she had an image of being tough and decisive he handled the situation in a calm, decisive way

Derivatives

decisively

adverb

decisiveness

noun

Origin:

early 17th century: from French décisif, -ive, from medieval Latin decisivus, from decis- 'determined', from the verb decidere (see decide)