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.
wacky whacky wack wacke wacko whack whacko wake wauk weak wick wag wok week weka woke
jacky wacky whacky quacky tacky whacko lucky oaky gawky kicky jack quaky lackey mucky mack laky icky pack caky pecky sucky dicky tack leaky cakey jockey wacke chucky shacko yack coky cocky rickey picky hack hickey knack fakey beaky quack back hockey lack wacko wack pocky pawky peaky whack rack rocky sack dickey ducky tackey mickey wrack shack shaky yucky