Eon rhymes with:
achaean, aegean, asean, boolean, breon, cyclopean, epicurean, eritrean, european, feehan, fujian, galilean, heon, ian, indo-european, jacobean, jian, keehan, korean, maccabean, mcgeean, mckeon, mckeone, meehan, mycenaean, paean, peon, plebeian, protean, rijn, shahian, sheahan, sheehan, sofian, teahan, teehan, tennessean, theon, treon, vannguyen, vian
Eon sounds like:
eamon, ehman, ehmann, ehmen, ein, einon, em, ema, emina, emma, emme, emmi, emmie, emmy, emu, en, ena, enea, enema, enemy, enman, ennea, ennen, ennui, eno, euan, ewan, ewen, eyman, eynon