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.
measure masseur maiasaur maser maiasaura massier messier mazer macer miser muser mahzor mazier misery mosser mouser mossier mousier mussier muzzier
rasure measure sure assure azure fissure caesurae leisure maiasaur reassure cesurae scissure seisure chaussure