Definify.com
Webster 1913 Edition
Decisive
1.
Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive.
“A decisive, irrevocable doom.” Bates.
“Decisive campaign.” Macaulay.
“Decisive proof.” Hallam.
2.
Marked by promptness and decision.
– De-ci′sive-ly
, adv.
De-ci′sive-ness
, Noun.