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.
tenure tenour tenor teener tenner teenier tuner denar toner denari tonier tinner tinier tanner denary tonner denier deanery denarii tannery tawnier tinnier
enure inure tenure manure coenure knaur knur venire honour coenuri penury snare snore synura synurae tenour genre
ten taenia taeniae teen teeny tenia teniae steno