"combative" in the adjective sense
1. contentious, combative, disputatious, disputative, litigious
inclined or showing an inclination to dispute or disagree, even to engage in law suits
"a style described as abrasive and contentious"
"a disputatious lawyer"
"a litigious and acrimonious spirit"
2. agonistic, agonistical, combative
striving to overcome in argument
"a dialectical and agonistic approach"
3. battleful, bellicose, combative
having or showing a ready disposition to fight
"bellicose young officers"
"a combative impulse"
"a contentious nature"
Source: WordNet® (An amazing lexical database of English)
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