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.
mosser mossier mouser mousier mussier messier massier masseur maser muser miser misery macer mazer mahzor mazier measure muzzier maiasaur
fusser passer gasser pisser cusser kisser hisser tosser mosser dosser tusser lesser guesser ser sere geyser poiser sassier raser suer lassoer messier noisier raiser pauser lessor poseur busier houser causer looser mousier nosier tussar issuer dossier choosier cheesier chaser wowser user tussor tessera dowser sissier queasier doser nooser seiser hussar goosier mossier lousier cosier baser diseur sear massier rouser rooser newsier bossier easier laser rosery miser misery poser riser gassier hissier scissor kaiser loser hoser pussier seer mussier douser mouser rosier maser leaser osier muser hawser reissuer teaser hosier sera fussier masseur tussur wiser wussier chasseur chooser chouser
moss mosso mossy mos massy mussy mess mows messiah mousse missay mouse mass massa masse missy messy miss moas mousey moos mousy moose muss mosey moms