Backside rhymes with:
brookside, dioxide, dockside, exide, lakeside, oxide, parkside, peroxide, superoxide, alcide, bayside, beachside, bedside, blindside, broadside, brookside, burnside, cambridgeside, cityside, countryside, curbside, dioxide, dockside, downside, exide, fireside, fratricide, fungicide, garside, gartside, genocide, germicide, glucoside, glycoside, graveside, harborside, herbicide, hillside, homicide, infanticide, insecticide, ironside, ketcherside, lakeside, mountainside, oceanside, oxide, parkside, peroxide, pesticide, poolside, prophesied, ringside, riverside, roadside, seaside, silverside, southside, suicide, sunnyside, superoxide, underside, wayside, whiteside, woodside
Backside sounds like:
babysat, babysit, backdate, backdated, backed, backseat, backset, bacot, bacote, bagdad, bagged, baggett, baggott, baghdad, baguette, baked, bakst, based, bashed, basista, basked, basket, baskett, baskette, basset, bassett, bassette, bassetti, bassist, bast, basta, baste, basted, bastedo, bastow, bauxite, baxt, bayside, beached, beachhead, beachside, beast, beastie, becht, becket, beckett, beckstead, beckwith, beckwitt, beechwood, begat, beget, begged, begot, behest, bequeath, bequeathed, bequest, bequette, beseeched, beseiged, beset, beside, besieged, bessette, best, beste, bested, bestow, bestowed, bhakta, biased, bickett, bickwit, biggest, bight, bigot, bigoted, bigwood, biked, biovest, biscotti, biscuit, bisset, bissett, bissette, bistodeau, bizet, boast, boasted, bobcat, bobst, bogeyed, bogged, bogota, booked, bookout, boost, boosted, boquist, bossed, bossidy, bost, bought, bouquet, bousquet, bowsed, boxed, boxwood, boy-scout, boycott, boycotted, buchheit, buchta, bucked, bucket, buckshot, buckwheat, bugatti, bugeyed, bugged, buist, bused, bushwhacked, busied, busiest, bussed, bust, busta, busted, busti, busto, busty, buzzed, buzzetta, bypassed