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.
whooshing wooshing whishing washing wishing watching witching
joshing whooshing wooshing coshing moshing noshing quashing dishing hushing dashing lashing washing pashing rushing gushing mooching mushing cashing gnashing leashing bashing wishing pooching sashing hashing fashing lushing pishing gashing ashing meshing pushing bushing deashing tushing whishing mashing fishing shushing