Thrifty rhymes with:
fiftee, fifty, nifty, shifty, biosafety, crafty, drafty, fiftee, fifty, flightsafety, hefti, hefty, lefty, lofty, nifty, raffety, rufty, safety, shifty
Thrifty sounds like:
tarbet, terrified, thrift, thrived, torbett, torpedo, torpedoed, torpid, trapped, traviata, treptow, tribbett, tribute, tripod, tripodi, tripped, trippett, trivedi, trivett, trivette, trooped, trovato, truffaut, turbett, turbidity, turbot, turpitude