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.
grouses grosses carouses cruses gorses grosze cruises crosses courses greases grasses griseous karosses gracious grosz graces curses crozes corses crises carses crases cruces krises grazes groszy kerseys creeses cresses creases caresses grazioso gracioso cuirasses coriaceous crasis crazes crisis carices coerces crazies grecize
rouses arouses grouses carouses rearouses burses eroses pharoses varuses viroses corses roses bourses reuses browses courses viruses ruses ceruses soroses xeruses drowses torses trusses uruses choruses broses cruises prosses karosses proses curses rooses grosses horses gorses cruses neuroses bruises peruses crosses purses nurses cereuses saroses xeroses drosses druses trioses uraeuses worses chorusses
grouse crouse gross grows grues gurus