[adjective] determining or having the power to determine an outcome; "cast the decisive vote"; "two factors had a decisive influence"
[adjective] unmistakable; "had a decisive lead in the polls"
[adjective] characterized by decision and firmness; "an able an decisive young woman"; "we needed decisive leadership"; "she gave him a decisive answer"
[adjective] forming or having the nature of a turning point or crisis; "a critical point in the campaign"; "the critical test" Synonyms:critical