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.
tressel tersely dressily triscele dorsel tarsal tercel tiercel trysail dorsal
tressy tress tres trews tyres truss trues tries treys trass trees tores tires tares dressy dress stress