Here's what rhymes with thantheir.
their there fair hair share fare faire hare cher fere sehr funfair where care bear chair pair rare wear affair bare dare spare swear tear unfair mare stare ware flare mer pear scare snare stair flair guerre lair mehr thoroughfare affaire mair pare thair aware square prayer unaware glare impair blare ensnare midair coheir anywhere compare despair repair beware forbear underwear earthenware bugbear horsehair solitaire forswear parterre repairer overbear spyware tinware ironware camelhair backstair ovenware everywhere prepare declare silverware aftercare curare medicare chinaware dinnerware foursquare maidenhair outerwear beachwear foreswear setsquare wirehair millionaire debonair disrepair commissionaire kitchenware eldercare legionnaire millionnaire broodmare debonaire questionnaire doctrinaire tableware billionaire concessionaire multimillionaire extraordinaire Words that almost rhyme with thantheir
cell fell sell hell shell celle sel well tell del bell smell gel spell swell tel dell delle nel yell belle nouvelle weal bel knell nell telle jell morel novelle noel hotel dwell excel befell motel quell unwell gazelle impel quel resell undersell nacelle outsell compel farewell dispel expel infidel repel foretell gaol lapel pastel fontanelle photocell retell misspell oversell personnel citadel cartel propel mademoiselle carousel decibel caravel commonweal carrousel muscatel zinfandel parallel clientele materiel organelle bagatelle antipersonnel nonparallel tagliatelle therefor