Main Entry: ac·tiv·ism

Pronunciation: \ˈak-ti-ˌvi-zəm\

Function: noun

Date: 1915

: a doctrine or practice that emphasizes direct vigorous action especially in support of or opposition to one side of a controversial issue

— ac·tiv·ist \-vist\ noun or adjective

— ac·tiv·is·tic \ˌak-ti-ˈvis-tik\ adjective