[syn: battleful, bellicose, combative]
The Collaborative International Dictionary of English v.0.48:
Combative \Com"bat*ive\ (? or ?), a.
   Disposed to engage in combat; pugnacious.
   [1913 Webster]
WordNet (r) 3.0 (2006):
combative
    adj 1: 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" [syn: contentious,
           combative, disputatious, disputative, litigious]
    2: striving to overcome in argument; "a dialectical and
       agonistic approach" [syn: agonistic, agonistical,
       combative]
    3: having or showing a ready disposition to fight; "bellicose
       young officers"; "a combative impulse"; "a contentious
       nature" [syn: battleful, bellicose, combative]
Moby Thesaurus II by Grady Ward, 1.0:
75 Moby Thesaurus words for "combative":
   aggressive, antagonistic, argumental, argumentative, battling,
   bellicose, belligerent, bickering, bloodthirsty, bloody,
   bloody-minded, chauvinist, chauvinistic, contentious,
   controversial, dialectic, disputatious, divisive, enemy, energetic,
   eristic, factional, factious, ferocious, fierce, fighting,
   full of fight, hawkish, hostile, ill-humored, inimical, irascible,
   irritable, jingo, jingoish, jingoist, jingoistic, litigious,
   logomachic, manful, manly, martial, militant, militaristic,
   military, offensive, on the offensive, partisan, pilpulistic,
   polarizing, polemic, pro and con, pugnacious, quarrelsome,
   saber-rattling, sanguinary, sanguineous, savage, scrappy, shrewish,
   soldierlike, soldierly, strenuous, trigger-happy, truculent,
   unfriendly, unpacific, unpeaceable, unpeaceful, vigorous, virile,
   warlike, warmongering, warring, wrangling