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.
cissoid cessed cestoi seaside cist ceased sassed seised soused sussed xystoi suicide zoisite
cissoid gneissoid gessoed jassid gussied lassoed missaid misshod sod
cissy cuisses cussos cissies cis