v. t. [ imp. & p. p. Litigated p. pr. & vb. n. Litigating. ] [ See Litigation. ] To make the subject of a lawsuit; to contest in law; to prosecute or defend by pleadings, exhibition of evidence, and judicial debate in a court; as, to litigate a cause. [ 1913 Webster ]

v. i. To carry on a suit by judicial process. [ 1913 Webster ]

n. [ L. litigatio, fr. litigare to dispute, litigate; lis, litis, dispute, lawsuit (OL. stlis) + agere to carry on. See Agent. ] The act or process of litigating; a suit at law; a judicial contest. [ 1913 Webster ]

adj. 1. of or pertaining to litigation.
Syn. -- litiginous. [ WordNet 1.5 ]

2. prone to initiate litigation.
Syn. -- litiginous. [ PJC ]

3. same as contentious.
Syn. -- litigatious, litiginous, contentious, disputatious; quarrelsome; argumentative. [ PJC ]

n. [ L. ] One who litigates. [ 1913 Webster ]