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.
rooser rosery rouser rosier riser raser rozzer rosary raiser rosaria reissuer racer razer razor ricer racier rasure reassure
hoser loser looser chooser nooser poser rooser doser ser reissuer boozer pussier passer lousier lesser cheesier pisser lassoer maser poseur sera gasser masseur mouser easier causer osar issuer rouser newsier queasier sear choosier raser wowser user tosser teaser dowser dossier diseur messier chaser seiser geyser rosier raiser busier bossier muser leaser hissier mossier fusser baser mosser kisser nosier noisier fussier suer rosery poiser sere massier seer riser doozer gassier houser zooier laser guesser mussier sissier hisser sassier goosier miser misery pauser cosier kaiser hosier hawser osier dosser mousier douser dozer tessera tusser wiser wussier chasseur cusser chouser
roose arose drossy prosy pross prose gross rose rosy rouse rousseau rows roes bros broos brose brosy eros erose cross crosse pros proso prossie dross trooz