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.
donator denature daunter denture tandoor daintier tandoori tentoria dander tenter tinter dandier daunder denuder tantara taunter tentier
donator senator genitor janitor cantor contour mentor minatory monitor santoor santour chantor