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.
deets duets deeds diets dits tets deities dots dates dawts datos duits teats ditsy ditas dauts dudes doits doats dites deads tides dotes dadoes duties tutees deduce diodes dittos didoes dodoes tidies todies didies dattos dawties toadies doodies toddies dowdies ditties duteous teddies dauties deutzia daddies dads ditz duds tads tats teds tits tods tots tuts
beets sheets weets leets keets deets meets pets needs wheats netts bootees cheats redes seeds goatees lets rets fetus diets etas tees suets meats tutees feeds yetis aedes suttees jets gets hets fetes fets metis fetas quiets feats deeds teats cetes vets haets poets settees pedes cedes sets heats reeds nets pietas bets jetes zetas suedes newts foetus neats coatees puttees peats quietus seats meeds betas getas heeds eats setts beats dees duets tets weeds wets whets metes yetts
deet deed deedy deity diet duet deeded dieted dueted duetted weeted