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.
trifid torrified terrified tariffed torrefied turfed trophied drift drifty trivet derived
trifid reified aerified verified horrified perfidy purified rarefied rarified serifed terrified torrefied torrified
tariff tref trefah trivia truffe turf turfy strife strive