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.
verist veriest verst verste verset fieriest veracity versed varsity feracity frisette voracity furriest firriest ferocity first frost freest frosty forest frusta frowst fairest frowsty forestay frizette viricide virusoid
aorist grist purist aurist verist lyrist diarist querist tourist jurist wrist poorest first crust eeriest fieriest surest aristo nearest crista curst rest priest aeriest verset hairiest verst dearest prest rarest arrest erst direst tourista sheerest cheeriest chariest worst wiriest wariest tryst triste durst searest teariest mooriest drest veriest merest sourest furriest firriest wrest miriest beeriest hurst rearrest sorriest leariest horst dourest frost verste arista airiest barista purest karst horste corset burriest sorest goriest wriest barest fairest forest burst leeriest airest wristy serest hoariest queerest rust prost driest crest merriest tarriest touristy trust turista weariest worset wurst charriest christy yarest
ferias viers oversew oversea oversaw overs overissue overeasy averse avers verso varias verse veers veeries various varies oversee overuse