De*ci*sive (?), a. [Cf. F. d'ecisif. See Decision.]
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.
Marked by promptness and decision.
A noble instance of this attribute of the decisive character.
Syn. -- Decided; positive; conclusive. See Decided.
-- De*ci"sive*ly, adv. -- De*ci"sive*ness, n.
© Webster 1913.