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.
detente detent detonate deadened detained tautened deodand
detente tent tautened stent fattened detent rattened pattened patentee tentie tenty attent battened potent tenet kittened quietened quotient latened latent mittened neatened patent patient heightened whitened