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.
savored savoured severed safaried sphered suffered syphered sievert
favored savored wavered severed foredo revered beavered favoured fevered havered hoovered quavered hovered covered quivered levered livered louvered louvred overed savoured devoured shivered
savor savory saver savior saviour savour savoury