Feminism rhymes with:
darwinism, jansenism, leninism, stalinism, abolitionism, agrarianism, americanism, anachronism, antagonism, arianism, authoritarianism, buchananism, chauvinism, communism, confucianism, creationism, darwinism, determinism, egalitarianism, expansionism, expressionism, hedonism, hellenism, hooliganism, humanism, illusionism, impressionism, interventionism, isolationism, jansenism, leninism, mechanism, microorganism, modernism, obstructionism, opportunism, organism, paganism, perfectionism, peronism, protectionism, puritanism, reaganism, republicanism, revisionism, satanism, sectarianism, stalinism, tokenism, totalitarianism, unionism, zionism
Feminism sounds like:
fanchon, fangman, fincannon, fincham, finchum, finegan, finigan, finken, finnegan, finnicum, finnigan, finucane