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.
desirous desires dossiers dousers teasers tsouris douceurs dysurias disarrays tsars dicers dosers dozers tsoris tsuris
desirous cerous cirrous cirrus serious serous acerous susurrous usurious