Citizen's rhymes with:
citizens, citizens, artisans, citizens, partisans, artisans, citizens, denizens, partisans, arkansans, artisans, citizens, citizens', cousin's, cousins, couzens, cozzens, denizens, dozens, fisons, gazans, horizon's, horizons, imprisons, kansan's, kansans, kansans', partisans, poisons, prison's, prisons, raisins, reasons, resins, rosen's, season's, seasons, susan's, telxon's
Citizen's sounds like:
catacosinos, catacosinos's, catching, catchings, catkins, cautiousness, chastising, chautauquans, chudzinski, citizens, citizens', cutchins, cutesiness