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.
petals petalous pedals pedalos pettles poetless peddles patellas patulous padles paddles piddles poodles pottles puddles pitiless
buttals petals vitals totals metals ratals medals ratels tels nettles rotls betels pedals catalos rituals coattails fettles dials cattails hotels redials teals medials talus kettles retails stales chattels whittles phytols tittles tattles dottels steals rootles mottles settles cutlas radials rattles pettles ideals littles guttles sotols butyls kittles pottles butles dals atlas deals beetles modals battles bottles pedalos tils footles dahls tails duals talas boatels cuttles taels vittles talls stalls botels metols mutuals cattalos tales mettles rattails cuittles details ketols motels dottles titles dales tootles wattles wittols shuttles
petal pedal pedalo pettily pettle apetaly