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.
whinniest whiniest winiest wenniest waniest wannest weeniest winced
bonniest funniest whinniest fenniest ginniest wenniest canniest runniest punniest finniest tinniest sunniest fawniest looniest toniest boniest teeniest veiniest viniest downiest tiniest phoniest mooniest luniest sheeniest wannest weeniest tawniest liniest puniest gooniest whiniest tennist piniest dunnest winiest waniest zaniest tannest rainiest funnest shiniest nest