Cliff's rhymes with:
cliffs, cliffs', cliffs, cliffs', hieroglyphs, liffe's, cliffs, cliffs', fyffes, hieroglyphs, ifs, liffe's, riffs, skiffs, sniffs, stiffs, ziff's
Cliff's sounds like:
calabasas, calbos, calebs, calf's, callebs, calliopes, calpis, calves, calypso, calypsos, celebs, celibacy, chalifoux, chaloupka, chlebowski, clabaugh, clabough, claps, claybaugh, cleavage, cleaves, cliffs, cliffs', clips, cloves, clovis, club's, clubhouse, clubhouses, clubs, colbaugh, colbeck, colby's, colbys, collapse, collapses, coolbaugh, culvahouse, cyclops, cyclops's, czechoslovak, czechoslovakia, czechoslovakia's, czechoslovaks