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.
choosiest choicest cheesiest chicest
goosiest rosiest choosiest cosiest nosiest sassiest choicest wussiest gassiest doziest coziest queasiest ooziest fussiest pussiest messiest foziest lousiest loosest newsiest cheesiest bossiest zooiest siesta massiest mossiest mussiest noisiest busiest booziest mousiest sissiest hissiest wooziest easiest