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.
demonise demonize demons daemons daemones demoness deaminase deaminize daimons demeans daimones dominies damns damans diamins domains dominos damianas tomans
demonise monies ammonias feminise humanise immunise communise pneumonias reminisce romanise simonies simonize demonize womanise