Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pugnātōrĭus, a, um, adj. [pugnator], of or belonging to a fighter or combatant, fighting: arma, i. e. sharp weapons (opp. rudes), Suet. Calig. 54: mucro, Sen. Contr. 2 praef.