decisive (Adjective) — Determining or having the power to determine an outcome. ex. "cast the decisive vote" ex. "two factors had a decisive influence"
decisive (Adjective) — Unmistakable. ex. "had a decisive lead in the polls"
decisive (Adjective) — Characterized by decision and firmness. ex. "an able and decisive young woman" ex. "we needed decisive leadership" ex. "she gave him a decisive answer"
decisive (Adjective) — Forming or having the nature of a turning point or crisis. ex. "a decisive point in the campaign"