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.
crises cruises cruses corses krises crisis crases curses carses carices creases crazies creeses courses cresses crosses curacies griseous carouses caresses cruces gorses cuirasses crazes crasis crozes grouses coerces grosses grasses kerseys greases karosses curassows carassows grazes graces coriaceous grosze coryzas grecize gracioso gracious graecize grazioso
rises praises bruises morrises hybrises reraises arrises krises cruises crises derrises lorises arises sherrises orrises irises merises brises cerises frises rerises raises braises parises fraises prises pareses resees wrasses roses carices reuses cresses neuroses creases erses corses creeses boreases brasses eroses verses horses erases heroizes hearses braizes nurses mercies varices caresses xeruses grosses cuirasses orrices prosses marses frisees precise piracies hydrases kerseys saroses soroses diaereses diureses rearouses druses drosses torses tresses trioses uraeuses ureases chorusses charases whereases prizes murices curses reassess prisses grasses heiresses pharisees prices broses greases burses gorses arses peruses purses phrases perses foresees birses peeresses prossies brassies pharoses crazies prases frizes cruses carses jerseys crases phoresies arouses ruses crisis heresies courses viruses morasses lyricise crosses browses rases rouses karosses phereses farcies frasses harasses gyrases viroses merisis rooses risus proses resews pursues parses prissies varuses bourses curacies cereuses grouses brisses frizzies narcissi presses carouses uruses duresses drowses ceruses seeresses xeroses arrases diereses reissues dresses worses terrases trasses trices trusses urases choruses rices
cris crissa kris curs curiosa curies crus cruise crosse cross cries cressy crass cress corse cors carse cars carious caries cruse curios curious curse scries