Tupperware rhymes with:
vaporware, dinnerware, farberware, outerwear, silverware, underwear, vaporware, anywhere, bakeware, bundeswehr, compuware, cookware, delaware, delftware, dinnerware, earthenware, elsewhere, everywhere, eyewear, farberware, flatware, footware, footwear, giftware, glassware, groupware, hardware, houseware, kitchenware, knitwear, knowledgeware, munsingwear, neckwear, netware, noteware, nowhere, outerwear, shareware, silverware, sleepwear, software, somewhere, sportswear, stoneware, swimwear, tableware, underwear, vaporware, wickware
Tupperware sounds like:
tabar, taber, tabor, tafaro, taper, tapper, tauber, tavera, tefra, teper, tepper, teuber, thievery, tiber, tiberi, tiberia, tiberio, tipper, tipperary, tobar, tober, toepfer, topiary, topor, topper, touvier, tovar, tupper