activist activism • activital · · · Info · Definitions · Synonyms · Characters · · activist · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a militant reformer. Synonyms: militant. · · Noun Definition 1 (adj) advocating or engaged in activism. Synonyms: activistic. · · Adjective Definition 1 Synonyms · · · militant · · Synonym 1 activistic · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076