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.
amours amoroso amorous amirs aimers ambers ameers ambaris ambeers ambries ambaries amberies amerce
amours tambours tumours rumours humours tumors cumbrous lemurs numerous remoras rumors timorous samburs reimburse moors tambouras moras mures tamburas morse mores muras lemures tamburs mors remorse sombrous dimerous murrs coumarous tumorous immures humors humorous femurs amorous memoirs demurs