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.
naiveties naivetes navettes nifties nighties naughties neophytes nights knights naughts navaids
naiveties vetoes cavities cuvettes lefties levities naivetes navettes safeties suavities uveitis vets