Leninism rhymes with:
darwinism, feminism, jansenism, stalinism, abolitionism, agrarianism, americanism, anachronism, antagonism, arianism, authoritarianism, buchananism, chauvinism, communism, confucianism, creationism, darwinism, determinism, egalitarianism, expansionism, expressionism, feminism, hedonism, hellenism, hooliganism, humanism, illusionism, impressionism, interventionism, isolationism, jansenism, mechanism, microorganism, modernism, obstructionism, opportunism, organism, paganism, perfectionism, peronism, protectionism, puritanism, reaganism, republicanism, revisionism, satanism, sectarianism, stalinism, tokenism, totalitarianism, unionism, zionism
Leninism sounds like:
lamagna, lamison, lamkin, lamson, lanagan, lancome, lancon, langan, langen, langham, langman, langone, langsam, lanigan, laningham, lankan, lencioni, lenzen, lenzini, lewinsohn, limousine, lincecum, lincicome, linguine, linson, loewenson, lomasney, lonesome, longan, longino, longman, luncheon