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.
basest bassist busiest bossiest basicity booziest
basest wisest loosest laciest wooziest maziest cesta juiciest laziest bossiest busiest easiest gassiest foziest fizziest fussiest bassist haziest cosiest choicest cheesiest queaziest mossiest mussiest mysost nicest nosiest paciest iciest rosiest sauciest siziest diciest doziest whizziest raciest lousiest zooiest mousiest housesit massiest coziest gauziest coassist jazziest messiest hissiest cesti fuzziest siesta zest zesty muzziest newsiest goosiest dizziest chicest wussiest housesat assist booziest wheeziest desist queasiest sissiest sassiest resist pussiest ooziest noisiest choosiest
bases baases basis basses bassos beses biases biasses bises buses abases obsess