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.
skosh sickish squoosh squooshy scooch scotch sketch squash squish squush scootch sketchy squashy squishy
skosh quackish squooshy gosh ricksha rakish puckish peckish peakish mawkish gawkish cosh cockshy cockish hickish hawkish buckish bookish sickish squoosh weakish