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.
tear teary tar dear tier tahr taro tare deary terra tarre terai deair terry tarry dearie terrae try tor toro true tori tour troy trey doer tyre deer tray torr tree tory dare trow tore tora trio tiro dere tire tyro dairy deray derry diary torah torii
bear ear shear wear tear dear sear rear pear near lear gear hear fear year ar er