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.
santour santur santoor santir sanitoria sanatoria senator santera saunter santero snoutier sanitary santeria sanitaria sander sentry sinter sounder century sandier centaur snottier snootier centaury ceinture centaurea sonneteer centre sundry centra sunder sender center sonder snider zander centare
contour santour donator senator santoor century centaur ceinture pandour monitor cantor mentor candour jointure janitor genitor venturi venture santur denture chantor