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.
century centaury centaur ceinture centre sentry centra center centaurea centare santur senator cindery santour sanitary cinder santir sender sinter sundry santera santero santoor saunter
century gantry wintry denture santur centaury centaur ceinture reentry pantry lientery gauntry country entry contour jointure gentry venturi venture santour sentry wintery chantry
centu cent cenote centai cento scent