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.
curs currs curse cures curios course curies cris crus cars cors curiosa curries cuirass curious guars craws cores coirs carrs curassow cries kurus gurus carse cress corse cruse gaurs cross crews cares crass crows creasy creese cressy kauris guiros queers crease crosse cooers caries crissa coarse kouros quires cruise curacy crouse caress carious kauries cowries quaeres queuers corries carries gurries carouse queries kris kors carassow quarries gars kirs crazy gorsy grows craze croze grass grees keirs gross greys gores grues koras gorse goers grays kiers croci
burs knurs tours sours sieurs purs pours ours knaurs fours lours gaurs curs giaours hours furs yours
cur cure curia curiae curie curio curr currie curry