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.
sickout scout scot scut scoot scuta scute sukkot socket sicked scud skit sect skat scat squat skite skeet skate scudo scatt sacked scatty skidoo socked sucked skiddoo squatty
backout lockout knockout sickout checkout cookout lookout scout takeout shakeout cot cut
sicko sick sickee sickie socko sic