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.
centaury century centaur centaurea centare ceinture center sentry centra centre sanitary santur cindery santour senator sanitaria cinder santir sender sinter sundry
centaury notary monetary centaur century sanitary unitary
centai cent cenote cento centu scent