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.
crouse carouse cruse crosse grouse cruise course crus carious curious cross crows curse corse carse croze coarse curios crease creese curiosa cris curs cors cars carrs gross crass cress grows craws cares craze coirs gorse currs cores grues croci kurus crews cures gurus cries kouros karoos guiros cressy caries creasy grease caress crissa cooers curies kaross kersey coerce carries corries cowries cuirass curries karroos carassow curassow
arouse rearouse rouse grouse carouse crouse course vrouws cirrose druse torse ariose morose brose corse nurse cerous serious sours torose furious tours sorus chorus triose torus torous hydrous drowse serosae parous cirrous ceruse rerose purse pours porose serous porous erose cruise horse fours ruse ferrous curse gorse morse cruse lours ours roose hours reuse arose crosse bourse peruse aurous prose browse ferreous carious roues gyrose burse giaours various rose bruise curious worse yours
cru crow ecru cougar roguery scour