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.

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.

Source: Webster's Revised Unabridged Dictionary (1913)