Buckwheat rhymes with:
bittersweet, nutrasweet, sunsweet, treesweet, athlete, balliett, bittersweet, bradstreet, broadstreet, browbeat, crabmeat, deadbeat, drumbeat, greenstreet, heartbeat, hemstreet, longstreet, mainstreet, margarete, mesquite, mincemeat, navarrete, negrete, norfleet, nutrasweet, obsolete, overeat, overheat, overstreet, parakeet, spreadsheet, stonestreet, sunsweet, treesweet, umfleet, upbeat, vandervliet, vanvleet, wallstreet, wellfleet, worksheet
Buckwheat sounds like:
babysat, babysit, backdate, backdated, backed, backseat, backset, backside, 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, bugatti, bugeyed, bugged, buist, bused, bushwhacked, busied, busiest, bussed, bust, busta, busted, busti, busto, busty, buzzed, buzzetta, bypassed