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.
payment pimento pimiento
payment lament dement cement raiment menta ament foment comment lambent meant lomenta loment memento moment momenta momento omenta pimento ramenta cementa tomenta