argumentative

adjective2

1. •
   Of or relating to argumentation; specifically, presenting a logical argument or line of reasoning; argumentive, discursive.

   • I proceed next to treat of the argumentative or reasoning Part of a Discourse. In whatever place, or on whatever subject one speaks, this beyond doubt is of the greatest consequence. — 1783
2. •
   Prone to argue or dispute.

   • Your host was in his turn eloquent,—authoritative,—facetious,—argumentative,—precatory,—pathetic, above all, pertinacious. — 1826