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.
scurry scarry scry scaur scour scary secure sugary screwy scarey skerry scar sugar screw scree score scare skirr sacra sucre scoria sicker soucar sowcar square squire sucker sacker saguaro scoriae suckier
curry gurry scurry carry curr kaury kerry quarry query augury equerry recarry roguery scarry skerry decury