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.
clever cleaver claver clover culver clavier clovery glover calvary calvaria cliffier golfer gulfier
lever clever reliever believer liever leavier louver clover liver culver leaver silvery liefer boilover palaver salver silver slaver sliver deliver delver shelver rollover elver laveer flivver levier clovery plover allover laver lover pullover claver livery livier cleaver clavier glover slavery solver delivery wolver shelvier
calve clave clavi cleave clef clivia clove