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.
nicest nosiest newsiest noisiest necessity
nicest chicest choicest queasiest coziest muzziest mousiest basest iciest sassiest haziest ooziest nosiest pussiest cist racist loosest juiciest fussiest gassiest sissiest zest diciest zesty doziest siesta whizziest laciest wooziest massiest cheesiest messiest maziest housesat cyst fascist gauziest rosiest cesti cesta mussiest mossiest newsiest housesit jazziest fuzziest oocyst noisiest paciest fizziest raciest hissiest foziest cosiest queaziest zooiest booziest laziest wussiest lousiest wisest wheeziest goosiest easiest dizziest bossiest siziest busiest sauciest choosiest