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.
puisnes piousness puissance paisans poisons paisanas paisanos piscinas poisonous paesans
puisnes maziness queasiness zines sinews cosines coziness cassenes rosiness messiness cines azines haziness foisons muzziness mousiness noisiness raciness liaisons ooziness dizziness cheesiness tisanes paisans esnes poisons sones fussiness seines wheeziness sines sauciness gassiness sissiness laziness sozines jazziness lysines massiness bassness newsiness mossiness mussiness fascines fuzziness biasness mesnes leucines raisins juiciness cosiness cassines bossiness bisons gauziness sanes nosiness lousiness usneas iciness siziness laciness seisins cuisines sassiness business easiness diazines foziness booziness piousness eosines oscines doziness wooziness hyoscines