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.
terrify torrify torrefy turfy tariff terefah tref turf tirrivee derive draffy teraph trefah trivia trophy
horrify terrify torrify reify aerify verify purify rarify torrefy rif
terai terra terrae terry tetri uteri