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.
refeed refed reefed reeved reffed reified revved roofed riffed refute reaved reived ruffed reft raved refit revet rived roved revote roughed
feed refeed fed woofed chaffed waifed whoofed deified tiffed ruffed daffed reffed riffed leveed buffed quaffed effete fifed sheafed feoffed hoofed giftee boffed coiffed luffed feued muffed naffed paveed piaffed pouffed reefed refed cheffed beefed gaffed fete knifed loafed goofed miffed feud offed feod feet huffed baffed coifed leafed puffed reeved peeved poufed cuffed biffed reified roofed sieved defied doffed waffed whiffed wifed chafed chefed chuffed yaffed
ref reef reefy reeve reif reify rife rereview tref trefah