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.
trifle truffle turophile travail tearful trayful trefoil trivial tearfully trivially drivel travel dareful deerfly direful trevally
trifle rifle turophile raffle refile reflew reveille revile riffle narghile ruffle prefile profile purfle servile xerophile truffle weariful
tariff tref trefah trivia truffe turf turfy strife strive