%litigatious%

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 ]