Obviate rhymes with:
abbreviate, alleviate, deviate, abbreviate, affiliate, alleviate, appreciate, asphyxiate, delineate, depreciate, deviate, differentiate, emaciate, enunciate, excoriate, expatriate, expiate, expropriate, foliate, glaciate, herniate, humiliate, inebriate, infuriate, ingratiate, initiate, instantiate, irradiate, mediate, misappropriate, nauseate, negotiate, officiate, permeate, recreate, renegotiate, renunciate, repatriate, repudiate, retaliate, substantiate, unaffiliate
Obviate sounds like:
obadiah, obeid, obeyed, obit, obviated, offbeat, offutt, oft, opiate, opt, opted, opto, ovate, ovett, oviatt, oviedo, ovitt, ovoid