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.
drouks drogues darks dirks dorks dreks drugs taroks durocs drakes trokes trucks trocks drecks troaks troikas darkeys darkies derricks druggies turacous trugs turks drags dregs trogs treks traiks trigos trikes tracks darics tarocs tricks tragus terraqueous hydroxy torques tricksy turacos turkeys turkois touracos turquois
drouks brooks eurokous sarcous perukes lurks crooks groks rooks crocks rucks rugous borks brocks trucks trocks turks terraqueous rocks forks croaks dorks porks murks karaokes crocus crucks corks irriguous raucous irokos verrucous frocks trokes troaks turacous taroks works
drouk drogue drug druggie druggy duroc