2 Verbs to Use for the Word pugnacity

An environment which tends to encourage the masculine traits in her, to arouse repeatedly her pugnacity and combative decisions in the more rapid give and take of the masculine world, will rouse the adrenal cortex to greater activity, and so make her face hirsute, her attitudes aggressive, and perhaps render her sterile.

" "You're a devil of a fighter," continued the Lieutenant, surveying the ferocious face and sullen air of the cutthroat with a soldier's admiration for whatever expresses pugnacity.

2 Verbs to Use for the Word  pugnacity