1. (n.) A person engaged in a lawsuit, either a plaintiff or defendant\.

2. (a.) Disposed to litigate; contending in law; engaged in a lawsuit; as, the parties litigant.

accessory accused actionable appellant appellee bitter-ender brawler causidical defendant diehard disputant dissentient dissident intransigent irreconcilable last-ditcher litigable litigationist litigator litigatory litigious naysayer negativist noncooperator objector obstructionist obstructive opposer oppositionist panel parties litigant party petitioner plaintiff protester quarreler resister scrapper suitor witness wrangler