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.
kirs keirs kiers kris kors kurus coirs koras kouros guiros karoos quires kauris kaross kersey kyries kerries cuirass kauries kerrias karroos curs gars cors crus cris cars crows grass cries cruse gorse gaurs craws currs grees crews gores corse cures curse grays gross gurus grows carrs cares cross cress goers gorsy greys carse guars grues crass cores
airs lairs chairs weirs deairs sirs pairs noirs mirs mairs kirs fairs keirs coirs heirs hairs vairs firs wairs whirs choirs