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.
tenor tenour tenner teener tenure teenier donor tuner denar toner denier tonier tinner denari tinier denary tonner tanner deanery denarii tannery tawnier tinnier
senor tenor nor tenour donor honour teener denar senora noir nori henry honor genre genro canoer keener manor minor pawnor senior junior snore wiener
ten taenia taeniae teen teeny tenia teniae steno