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.
cerias cerise cerci ceres ceros serais ceruse cerous cereus series sierras serious serries sris sers xerus suras zeros suers sears cires saris soras zoris seers seres surahs zeroes surras serosa sieurs sirras serows serous cirrus cirrous sauries seeress serosae sirrahs souaris
rias varias cerias norias kerrias yttrias arias ferias sharias ras raias arras fairies hoorays areas gerahs maras horahs barrios carries curries murries hurrahs pries kerries brios curios loris ferries eras sirras boreas jerries brays auris rerise surras morris proas prase wries fiars sauries crass caries derris veeries berries reis liars bris douras paris kauris raws varas lories sierras liras durras tarries terras torahs prays prise tories trays parries dairies dories ureas whereas paries whirries charas cherries souaris shariahs paras sherries shris nereis series peris juries bewrays murras sirrahs cerise derays quarries harass trios erase buries hydras draws muras dries iris gharris morass forays arrays surahs moras lorries jarrahs rase tries morays zoris boras praos hurrays marries eyras kauries faeries kyries houris nairas saris koras noris cries braes cowries queries hoorahs pooris brass frays rays hurries grass suras eyries rise buras briss varies frise trois auras craws horas arise fries gharries mbiras bras braws arris aeries cris harries cuirass phrase perries rais pariahs drays bries furies herries peeries kris corries durries hybris serais lauras curies frass praus gurries puris grays laris gyrase serries priss soras hydrase orris terais diaries terries toras dearies sris trass urase derries wearies dourahs wherries worries cheerios dowries choreas naris duras sherris tiaras