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.
tetrad tetrode teetered detrude titrate deterred detoured tattered teddered tittered tottered deuterate deuteride dotard tutored doddered
trad tetrad turd petard outread dread tirade trade tread triad trod dorado retard hatred laterad leotard metred mitred nitrid outtrade putrid retread dotard hotrod ritard chytrid
tetra tetri teeter tetter titre