decisive
oxford
views updated May 23 2018de·ci·sive / diˈsīsiv/ •
adj. settling an issue; producing a definite result: a decisive 7–2 vote decisive evidence. ∎ (of a person) having or showing the ability to make decisions quickly and effectively.DERIVATIVES: de·ci·sive·ly adv.de·ci·sive·ness n.
The Oxford Pocket Dictionary of Current English