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.
risky risk rusk reseek resoak risque
risky whisky sky bisk bosky husky casky kiosk musky passkey pesky risk disk dusky whisk whiskey
rais briss prissy prise kris crissa cris iris frisee frise bris raise arise rise rias reissue reis priss sris