Here's what rhymes with supplay.
play re lay pray ray prey tray yea ley rei drei lei rea tre bray dray brae roue trey they may day way say pay delay j array bay clay gay gray grey k che hay nay spray weigh ballet stray astray fay fe fray slay valet allay dey fillet hey sei sleigh whey bj bk jay kc payee rj tae tj wei bey flay neigh belay cay fey shay splay overplay aurae hurray umbrae away stay today survey decay essay obey okay betray repay sway oj vertebrae bouquet defray ij ok overlay papillae passe dossier fj puree replay underlay zwei parquet soiree souffle filet airplay byplay moray patellae prepay purvey sachet toupee hooray briquet outplay reweigh spay aweigh display convey cafe dismay halfway interplay portray underway attache cliche disarray lamellae passageway cabaret emigre francais naturae saute alleyway crochet croquet fistulae risque sobriquet wordplay fibulae hideaway inveigh nisei pleurae sorbet soubriquet stowaway underplay noway overpay overstay sickbay urethrae layaway medullae outstay underpay bobsleigh copay misplay tearaway respray anyway everyday holiday runaway disobey faraway protege sequelae waterway gangway matinee nebulae toothache breakaway getaway lingerie maxillae scapulae caraway giveaway ricochet throwaway resurvey stingray flyaway roundelay caesurae uvulae copulae foldaway penumbrae yesterday formulae naivete microarray societe straightaway workaday cabriolet carriageway castaway salmonellae takeaway macrame cybercafe walkaway tarantulae communique trabeculae companionway caravanserais