Obviates rhymes with:
abbreviates, deviates, abbreviates, affiliate's, appreciates, appropriates, asphyxiates, delineates, depreciates, deviates, differentiates, emaciates, expatriates, herniates, humiliates, inebriates, infuriates, instantiates, misappropriates, negotiates, officiates, permeates, radiates, recreates, repudiates, substantiates
Obviates sounds like:
obits, obtuse, opdyke, opiates, opitz, optek, optic, optica, optics, opts, optus, ovett's, oviatt's, ovitt's, ovitz, ovitz's