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.
raitas reatas riatas rats ratos rotas writs riots rites rates raids radios writes radius redias roadies riotous readies rads ritz rots rets rids ruts routs rides reads ritzy rotis roots rotes rotos roads readds reties retuse rottes routes roadeos rowdies
litas raitas ditas pitas its tas bitts katas pittas codeias kits aits getas bites fetas mitts lyttas bitsy hits taus gites zetas kites bettas baits lotahs stoas riots mitis naiads dits shits chetahs wits whits waits toits titis tads doits medias mites writes biotas zits cottas iotas suits tass rites mutase reatas situs writs gits nites botas sits boites jotas satays teas suttas knits betas quiets gaits fits quits sites riatas coitus lits taws fiats pietas bits nits taos suites cites rotas redias quoits etas stays quotas lotas zitis pits dites diets ditsy duits tats tits utas whites wites cheetahs chits shittahs
raita rat rite writ write airt braid bratty riot irate frit crit grate gritty orate prate drat trite britt riata reata fritt rato rate raid radio radii brat ratty frat brit crate grat grit krait prat rarity trait urate