I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
disease diseuse disses disuse daises dieses daisies decease disseise disseize doses disseizee disseisee dosses douses teases dowses diesis dassies diocese tissues dices deices tawses tasses touses tosses tusses dizzies doozies tassies tussahs tussehs
casease misease disease seas feases teases caseose diseuse cease seise eases rousseaus nauseas reseaus ceases decease leases peases disseise masseuse wiseass