a. 1. Consisting of, or characterized by, argument; containing a process of reasoning; as, an argumentative discourse. [ 1913 Webster ]
2. Adductive as proof; indicative; as, the adaptation of things to their uses is argumentative of infinite wisdom in the Creator. [ Obs. ] [ 1913 Webster ]
3. Given to argument; characterized by argument; disputatious; as, an argumentative writer. [ 1913 Webster ]
--Ar`gu*men"ta*tive*ly, adv. -- Ar`gu*men"ta*tive*ness, n. [ 1913 Webster ]