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.
defats defeats deviates davits duvets devotes devotees tofts tufts dights divots divides tuffets taffetas tofuttis
fats defats rifts soffits softs fiats fets feats fates fatso savates hafts fads lefts lofts muftis refits defeats tofts tufts wefts shafts haffets rafts gifts aviates lovats lifts caveats haffits efts hefts ghats befits buffets vatus vats softas sifts ghauts fits deviates tuffets wafts whiffets shifts
defat deaved defeat defied deft deified