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.
sedulity sodality sodalite stellite satellite stylite stellate stilt sidled staled stoled stolid styled stylet
sedulity duality fatality feudality fidelity futility vitality ideality modality motility mutuality natality nodality sodality totality utility