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.
leary lear leery lar lehr lier liar lair lory leer lari laura laree lorry laari loury lira lire liri lore lour lure lyre
leary deary weary teary ear hear query tear deray lear airy perry veery kaury knarry ferry hoary jerry saury diary leery merry nary parry peery rear sear dairy dear terry wear wherry chary cherry sherry fiery serry eyry fairy berry beery bear kerry awry vary very gear marry herry quarry feuar eery hairy gharry near aery deair harry faery derry tarry carry fear wary pear charry cheery shear year
lea flea ilea leal leally olea plea