[con.clu.sive] adj (1536) 1: of, relating to, or being a conclusion
2: putting an end to debate or question esp. by reason of irrefutability -- con.clu.sive.ly adv -- con.clu.sive.ness n syn conclusive, decisive, determinative, definitive mean bringing to an end. conclusive applies to reasoning or logical proof that puts an end to debate or questioning "conclusive evidence". decisive may apply to something that ends a controversy, a contest, or any uncertainty "a decisive battle". determinative adds an implication of giving a fixed character or direction "the determinative factor in the court's decision". definitive applies to what is put forth as final and permanent "the definitive biography".