An Activitist (not to be confused with an activist) is an active proponent of activities. Activitism is the opposite of being passively entertained. An activitist seeks to engage his or her environment as opposed to merely being a consumer, an observer, a member of the audience. Activitist ac·tiv·it·ist (ak-tiv-uh-tist) 1. an especially active, vigorous person 2. one who likes activities 2. of or pertaining to activitism or activitists: an activitist organization for playing frisbee. 3. wanting to get out of the house and do something cool. The Activitist Discordians were wearing fake moustaches.