Underwent rhymes with:
schwent, wendt, went, wente, accent, ascent, assent, augment, bendt, bent, bente, brent, cement, cent, circumvent, consent, dement, dent, dente, descent, dessent, discontent, dissent, ent, event, extent, fendt, fent, ferment, gent, ghent, gourment, ident, indent, intent, invent, jent, kent, lament, lent, malcontent, meant, mente, misrepresent, misspent, nonevent, outspent, overrepresent, overspent, pent, percent, prevent, reinvent, relent, rent, repent, represent, resent, scent, schwent, sent, spent, stent, tashkent, tent, trent, underrepresent, unspent, vent, wendt, went, wente, zent
Underwent sounds like:
unadorned, underhanded, undermanned, undermined, underneath, undetermined, undreamed, untrained, unturned