See also mob.demomania a mania for crowds. Also called ochlomania. demophilia a fondness for crowds. —demophil, demophile. n. demophobia an abnormal fear of crowds. Also called ochlophobia. mobocracy government by the mob; the mob as ruler or dominant force in society. —mobocrat, n. —mobocratic, adj. ochlomania demomania. ochlophobia demophobia. phalanx an ancient military formation of serried ranks surrounded by shields; hence, any crowded mass of people or group united for a common purpose.