Decisive De*ci*sive, a. [Cf. F. d['e]cisif. 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. [1913 Webster]

2. Marked by promptness and decision. [1913 Webster]

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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.