I. -nt adjective
Etymology: Middle English, from Middle French, from Latin militant-, militans, present participle of militare to engage in warfare — more at militate
1. : engaged in warfare or conflict : fighting
militant powers
2. : given to fighting : combative
3. : aggressively active in a cause
militant suffragist
militant trade unionism
4. obsolete : military
banners militant — William Wordsworth
Synonyms: see aggressive
II. noun
( -s )
: a militant person
militants of the radical party