[dɪˈsʌɪsɪv], (Adjective)

Definitions:
- settling an issue; producing a definite result
(e.g: the archers played a decisive part in the victory)

- having or showing the ability to make decisions quickly and effectively
(e.g: she had an image of being tough and decisive)


Phrases:

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