Communist's rhymes with:
communists, communists, communists, communists, abolitionists, antagonists, arsonists, chauvinists, communists, conservationists, exhibitionists, feminists, humanists, illusionist's, illusionists, jansenists, obstructionists, perfectionists, platonists, protagonists
Communist's sounds like:
chemists, coincides, comcast's, communicates, communists, communists', comsat's, comstock, concedes, conestoga, conjugates, connaught's, connects, conquest's, conquests, consists, constitutes