disputatious

/ˌdɪspyʊˈteɪʃəs/

If you're always looking for a fight, consider yourself disputatious. However, disputatious is more appropriate for the head of the debate team rather than the playground bully.

Disputatious is a somewhat old-fashioned term now. In every day speech we'd probably use a dozen more colorful words, many not printable here. The one area where it does live on is in the legal sphere — two battling parties are often said to be disputatious. And, in fact, an extreme form of being disputatious often involves frequently taking people to court, or being litigious. Only lawyers love disputatious, litigious people.

Definitions of disputatious

1. adjective

   inclined or showing an inclination to dispute or disagree, even to engage in law suits
   “a disputatious lawyer”

   synonyms: combative, contentious, disputative, litigious

   argumentative

   given to or characterized by argument