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.
tedious teds teddies duteous touts didos todies dittos didoes tidies diodes teiids toddies toadies tits tods tots tads duds dits tets tuts tatouays dates tides tates diets datos toots titis totes toads tauts deeds ditsy dotes deads dites teats tutus dados dodos ditas duads toits deduce didies tuttis dattos tootsy tutees duties todays dauties dowdies tutties deities ditties daddies dawties doodies tatties doodoos tattoos titties
odious tedious douse adieus adios audios vodous hideous iodous medius nodous radios radius didos dis dos