militant

(noun) a militant reformer. Synonyms: activist.

(adj) disposed to warfare or hard-line policies. Synonyms: hawkish, warlike. Examples: "Militant nations." "Hawkish congressman." "Warlike policies."

(adj) showing a fighting disposition. Synonyms: competitive. Examples: "Highly competitive sales representative." "Militant in fighting for better wages for workers." "His self-assertive and ubiquitous energy."

(adj) engaged in war. Synonyms: belligerent, war-ridden, warring. Example: "Belligerent (or warring) nations."