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.
drifty drift drafty draft draftee derivate draughty droughty trifid trivet derived draught drought tariffed
drifty rift brevity crafty gravity grift privity drafty drift shrift
derive draff draffy dreigh driegh drive