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.
wait wat wit wadi wite whit what watt white witty wheat whity whitey waddie wad wet wot weet whet whid wide wade wady woad waddy widdy widow