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.
weirdo weird weirdy weirdie wired waired wearied whereto whirred ward wert word wherried whirried wared wordy warred whored whereat worried
hairdo weirdo aired paired mired liard credo caird laird deaired redo bird fiord fired waired tired fordo foredo wired choired yaird faired sired gird dorado tardo irid ordo lirot laired cardio virid quired ired weird hired heired haired uredo teredo weirdy chaired shaird yird
weir wair wear weary weer were where wherry whir whirr whirry wire wirra wiry ewer