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.
locator locater locutory lector lictor legator lactary lecture ligature
locator victory sector rectory reactor nugatory locater lictor legator lector coactor hector victor cater vector factory factor equator actor gator negator picador rector rogatory doctor