Argumentative

1. a. Given to argument; characterized by argument; disputatious; as, an argumentative writer.
2. a. Consisting of, or characterized by, argument; containing a process of reasoning; as, an argumentative discourse.
3. a. Adductive as proof; indicative; as, the adaptation of things to their uses is argumentative of infinite wisdom in the Creator.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.