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.
diciest dizziest doziest desist deceased diseased disseised disseized disused
iciest juiciest raciest sauciest laciest paciest diciest cist gassiest queasiest jazziest gauziest hissiest fizziest easiest pussiest mossiest queaziest siziest foziest fuzziest maziest booziest mussiest newsiest noisiest massiest bossiest coziest sassiest racist fussiest choicest society sissiest lousiest messiest whizziest mousiest goosiest laziest cosiest cesta siesta busiest zooiest rosiest doziest wooziest cheesiest cesti haziest muzziest nicest nosiest fascist dizziest wheeziest wisest wussiest chicest ooziest choosiest