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.
cruelly cruel carrell gruel creel curly curule crawly creole greyly carrel queerly corolla criollo curl carl guerilla craal grill coral crawl carol guerrilla krill carle corral curial curlew gorily grayly grille growly caroli cariole gorilla quarrel
cruelly really areally purely surely surreally