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.
chassed chased chaste cheesed choused chowsed chest chesty
biassed massed chassed sassed passed gassed missed paused bossed cased mussed mossed issued leased phased jassid guessed lassoed kissed fussed caused cessed sussed dossed tawsed tissued wissed messed lased chased basset gessoed feased based hissed jessed asset eased bussed biased reissued raised liaised rased ceased moussed fessed gussied pissed dissed tasset teased tossed cussed yessed
chasse chais chaise chaos chase chaws chays chess chias