Average's rhymes with:
averages, averages, beverages, arrearages, averages, beverages, carriages, claridges, disparages, marriages, miscarriages, partridges
Average's sounds like:
aaberg, abarca, abbruzzese, aberg, abhors, abraxa, abraxa's, abraxas, abrego, abruzzese, abruzzo, affair's, affairs, afresh, africa, africa's, aparicio, appears, appraise, appraises, apprise, approach, approaches, avarice, average, averages, avers, aversa, averse, avery's, aviaries