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.
brutely brutally brutal brittly brightly bordel brattle brittle broadly buirdly bordello bridally broodily bridal bridle bradawl
brutely rudely aureately irately courtly crudely curtly lyrately seriately tritely