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.
signior signiory seignior signiori signor seigniory signore signori signory signora seignory signer seigneur skinnier seigneury squinnier skinner sickener scanner scunner
signior seignior ignore peignoir pignora seigniory seignory signiori signiory signor signora signore signori signory
segni signa signee soigne soignee