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.
mill maill mille mil mull mail milo mell mall mile moll moil mouille maile mulla milia molly miaul mallei mullah mollah milieu mollie mallee mulley mallow mellow mol mel meal mola mool mole mewl male mule maul moly mealy melee moola muhly muley
bill kill shill will dill vill hill ill gill jill fill maill quill mill nill pill rill sill zill till chill yill