pugnacious (
http://definr.com/pugnacious)
adj 1: tough and callous by virtue of experience [syn:
hard-bitten,
hard-boiled]
2: ready and able to resort to force or violence; "pugnacious
spirits...lamented that there was so little prospect of an
exhilarating disturbance"- Herman Melville; "they were
rough and determined fighting men" [syn:
rough]