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.
antre antra andro
antre centre entire enter ranter jointure nature pointer banter kantar sentry gaunter denture intro country contra painter cantor minter mentor quainter santur tinter shunter chaunter renature chantor wintry antra wanter gentry entree taunter ceinture nitre daunter center reentry hunter linter fainter canter gauntry entry mounter cointer gantry mantra punter tantra counter sinter venter pantry bunter jointer centra vaunter miniature hinter qintar quintar saunter santir centare inter venture denature reinter haunter tenter reenter untrue winter renter chanter chantry geniture chunter yantra
ant anatto anta antae ante anti aunt auntie aunty