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.
pouffed poufed puffed piaffed pfft paved paveed peeved pooftah
huffed puffed luffed chuffed pouffed ruffed muffed buffed cuffed riffed fifed daffed coiffed tiffed miffed quaffed biffed baffed chaffed poufed reffed offed whiffed feoffed piaffed buffet tuffet naffed doffed gaffed boffed cheffed waffed yaffed fed
pouff pouffe pouffy pouf puff puffy