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.
felids fields fluids flits velds felts folds fealties fluidise flites floods faulds velites foliates filiates fellates fluidize flats phylloids flatus velleities fleets flytes flotas filets floats fluyts faults flouts flutes fillets flautas folates fallouts veloutes
lids solids halids sialids felids toluides bolds melds wealds silds wields sloids solidus fields glads slides cheloids clods pleiads milds builds elds collides bields hyaloids shields woalds tallits bolides holds ceilidhs caulds childes glides gelds velds ballads faulds elides flits moulds colloids gilds loids colds folds phylloids lits allods wolds lads molds olds tildes balds welds dildos golds clads chiliads naleds guilds meloids slits sleds salads plods plaids lidos toluids keloids chields fluids halides haloids gleds wilds iliads yields
felid fealty fellate felled felt field filiate flied flit flite fluid foliate folioed fueled fuelled