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.
territ terret trite trait turret torrid terete tarried tort trot tart tret treat tarty torta torot droit derat triad tarot trout tried teared teredo tiered toroid treaty deride triode tarred trouty diorite
forrit worrit territ grit britt lariat writ fruit barite barret write norite parrot brit pierrot turret rarity garret cerite crit droit carrot riot bruit trait chariot horrid rite pyrite periti griot purity ferrite fritt ferity burrito ferret merit terret verite verity yperite parity frit curite rewrite cowrite diorite jerrid torrid trite krait heriot charity
terra terrae terry derry tarre tarry tear teary terai tier torr stere stereo tetra tetri uteri