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.
secures scurries screws scares scries sucres screes scaurs scores scours squires secrecy squares skerries scars sakers sugars skiers sackers saggers seggars sowcars soakers soucars suckers seekers cicorees saguaros scarious skirrs saggars
secures cures curs screes sucres squares screws cries scries scores lucres cress figures cares cores scares decares decries recurs crews curies requires ligures daycares squires scours curse scaurs currs fiacres decrees nacres becurse auguries acres quires kauries decuries