Marxism rhymes with:
sexism, sexism, absenteeism, amateurism, anthropomorphism, antidisestablishmentarianism, atavism, baptism, buddhism, careerism, cubism, culturalism, defeatism, deism, dimorphism, dwarfism, ethnocentrism, extremism, idealism, irredentism, isomorphism, jainism, jingoism, masochism, mccarthyism, modalism, monism, monotheism, multiculturalism, multilateralism, nazism, nestorianism, parliamentarianism, pietism, polymorphism, polytheism, pugilism, realism, sadism, sexism, surrealism, taoism, theism, truism, vandalism, vegetarianism, vigilantism, voyeurism
Marxism sounds like:
mannerism, maraschino, marcano, marchesani, marchesano, marchini, marchione, marchman, marciano, marcin, marckesano, marcmann, marcom, marcon, marcone, marconi, marcum, marcussen, margeson, margin, marijuana, markan, marken, markham, markin, markman, marksman, marksmen, markson, markum, markuson, marogen, marroquin, marsam, marshman, marsicano, marson, marukin, marxen, marzan, marzano, mayerson, mergen, merkin, merrigan, mershon, mersman, merson, meyerson, mirkin, moragne, morcom, morejon, morgan, morgana, morgen, morgun, morison, morken, moroccan, morricone, morrison, morson, murakami, murchison, murjani, murzyn, myerson