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.
sugared squared saggared sacred scared scoured squired saggard secured scarred suckered scurried saggered scored scried screed cigaret skirred cigarette scart scrod squawroot secret squirt secrete skirret
beggared saggared sugared scarred degreed sacred acred augured saggard cigaret niggard laggard jiggered haggard figured buggered cared regard greed gored garred garda caried nacred agreed scared squared guard saggered daggered shikarred