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.
weirdy weird weirdo weirdie wordy wired waired wearied whirred word wert ward whirried wherried wared warty warred whored whereat whereto worried
weirdy hardy quired caird gird corody ired hired irid deaired waired perdy tardy weirdo pardy wired nerdy chaired liard shaird laired yaird curdy aired haired tired grody laird faired fiord corrody virid hairdo fired dirty weird bird sired heired parody wordy paired choired mired shirty lardy yird
weir wair wear weary weer were where wherry whir whirr whirry wire wirra wiry ewer