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.
scunner scanner squinnier skinner sickener skinnier signer seigneur seigneury signor signior signora signore signori signory
cunner gunner scunner canner cannery cannier conner gunnery scanner skinner skinnier squinnier