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.
nutrias neuters nutters notaries niteries notorious noters nitres niters nitros natters nitrous nitroso netters natures knitters knotters notarize nadirs needers nodders
yttrias latrias nutrias hysterias tuataras retries tetras poetries sutras mattrass straws matrass satoris hatterias trois betrays trios tries trays trass toras sataras strass strays daturas tetris tuateras