Arrhythmias rhymes with:
anemias, hermias, nahmias, adelphia's, albania's, algeria's, alitalia's, anacostia's, andrea's, anemias, arabia's, area's, areas, arias, armenia's, ataxia's, austria's, bacteria's, bavaria's, bolivia's, bosnia's, bosnias, bulgaria's, cafeterias, cambodia's, chechnya's, colombia's, columbia's, confiterias, corneas, cumbia, cumbias, cynthia's, czechoslovakia's, deandrea's, encyclopedias, ethiopia's, eugenia's, farias, forsythias, goeas, hermias, hibernia's, iberia's, india's, koreas, latvia's, leucadia's, liberia's, libya's, lilias, lithuania's, lusitania's, lusitanias, mafia's, mafias, media's, multimedia's, nahmias, namibia's, nigeria's, nokia's, olivia's, olympia's, peoria's, peria's, petunias, philadelphia's, phobias, poinsettias, pretoria's, romania's, rosaria's, scalia's, scandinavia's, serbia's, serbias, slovakia's, somalia's, somalias, sylvia's, syria's, tanzania's, utopias, valencia's, victoria's, victorias, yugoslavia's, zambia's, zinnias
Arrhythmias sounds like:
aerodynamic, aerodynamics, aerodyne's, airworthiness, arden's, artemas, artemus, awarding