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.
mutular modular medullar medullary medlar motlier mottler muddler meddler middler modeler
mutular titular talar tolar medullar modular nodular radular stelar stylar titulary tutelar
mutule mutely mutual mutually mutuel