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