Quarrelsome (13)
'quarrelsome' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for argumentative that I've seen before include "Disputatious" , "Opinionated" , "Quick to disagree" , "Contentious" , "keen on rowing" .)
'quarrelsome' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for bellicose that I've seen before include "Aggressive and willing to fight" , "Aggressive, looking for a fight" , "Not like lamb" , "Pugnacious, eager to fight" , "Warlike" .)