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.
scarious scariose scars scours scries scaurs scares sucrose soucars sowcars scurries saguaros squarrose scores scarce screes screws sakers cigars sucres sugars sackers seggars soakers saggars saggers squares suckers sucrase secures skerries skiers skirrs
carious curious vagarious vicarious scarious carouse crouse curios curiosa grouse vigorous nacreous rigorous scariose decorous
scar scare scarey scarry scary scaur scoria scoriae escar