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.
poseur poser poiser passer pauser pisser pussier pacer pacier piecer pessary pissoir pizzeria
poseur chasseur diseur masseur ser newsier fissure kisser maiasaur measure gassier sure bossier kaiser assure scissure cusser miser mouser causer misery osier laser fussier hoser seisure rasure rooser easier rosier mousier wussier choosier cheesier raser dosser wiser user raiser tusser tessera loser dowser douceur sura houser reissuer mossier suer muser baser pauser poiser busier nooser cesura leaser riser nosier hissier pisser sear fusser mussier lassoer issuer messier looser massier queasier goosier hosier sere leisure seer maser sour noisier gasser caesura chaser hisser sera passer mosser guesser sieur lesser rouser rosery cosier sassier lousier sissier reassure hawser wowser geyser pussier douser teaser tosser seiser tussur usury doser poser chaussure dossier chooser chouser
pose posse popsie paseo poesy pois poise poos pase poussie posy pows apos apse epos popes pops popsy