Meaning

noun a militant reformer

adjective advocating or engaged in activism

originEtymology tree Proto-Indo-European *h₂eǵ- Proto-Indo-European *-eti Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus ▲ Ancient Greek ἐνεργητῐκός (energētĭkós)sl. Latin āctīvusbor. Old French actifbor. Middle English actyf English active Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti…

Etymology from Wiktionary, CC BY-SA 3.0