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