Nixon's rhymes with:
nixons, dixon's, dixons, nixons, antitoxins, dixon's, dixons, ericsson's, erikson's, jackson's, jacksons, nixons, saxon's, saxons, texan's, texans, toxins
Nixon's sounds like:
nagging, nakanishi, nakasone's, nanchang, nanjing, nanking, nasons, new-mexicans, niceness, nickens, nicknames, nissan's, nissans, nixons, niznik, non-nonsense, noneconomic, nonsense, nosiness, nosing, nuisance, nuisances, nunsense