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