litigant
noun /ˈlɪtɪɡənt/
  /ˈlɪtɪɡənt/
 (law)- a person who is making or defending a claim in courtTopics Law and justicec2Word Originmid 17th cent.: from French, from Latin litigant- ‘carrying on a lawsuit’, from the verb litigare from lis, lit- ‘lawsuit’.