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