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.
trefah terefah tref teraph torrefy turf turfy trave trove trophy trivia tariff dreigh truffe driegh trough terrify torrify tirrivee
tare tire tore tree trey true tyre strew