pugnacious
1. [ adjective ] tough and callous by virtue of experience
Synonyms: hard-boiled hard-bitten
Related terms: tough
2. [ adjective ] tough and callous by virtue of experience
Synonyms: hard-boiled hard-bitten
Related terms: tough
3. [ adjective ] ready and able to resort to force or violence
Synonyms: rough
Examples:

"pugnacious spirits...lamented that there was so little prospect of an exhilarating disturbance"- Herman Melville "they were rough and determined fighting men"

Related terms: aggressive
Similar spelling:   pugnaciously
  pugnacity