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.
whisker whiskery wiseacre
risker whisker boskier muskier masker huskier husker fossicker esker busker saker peskier asker skier siker sicker riskier tusker bosker duskier whiskery