De*ci*sive (?), a. [Cf. F.
décisif. See Decision.] 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.
A noble instance of this attribute of the
decisive character.
J. Foster.
Syn. -- Decided; positive; conclusive. See
Decided.
-- De*ci"sive*ly, adv. --
De*ci"sive*ness, n.