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.
shicker shikker shucker shocker shaker shikar checker shikari shakier shaggier chickory shikaree chickaree choker chokier chukker chigger chicory checkrow cheekier chakra chukar chequer chugger chukkar
icker sicker quicker kicker nicker licker dicker wicker picker ticker whicker bicker shicker ickier pockier hacker fucker ocker puckery diker pickeer locker biker duiker dacker jacker tucker dickier pucker quackier shucker rockery shikker cockier checker daiker duckier knacker docker rocker quackery lacker rockier cocker packer tackier pickier mockery luckier backer knackery tacker necker sucker whackier hocker mocker knocker sacker pecker whacker wacker racker peckier wrecker decker muckier kickier siker suckier hiker ducker bucker liker wackier mucker shocker piker yuckier
chick chickee shack shacko sheik sheikh shock shuck