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.
cheapish sheepish
cheapish apish pish foppish hippish quippish mopish popish uppish sheepish
cheap cheapie cheapo chap chape chapeau chappie cheep schappe