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.
snoutier snottier snootier sinter santir snider sandier santour saunter santero santera sounder santeria sonneteer center sander santur sonder sender sunder sentry santoor senator sanitary sanatoria sanitaria sanitoria centra centre cinder sundry zander
snoutier bunter daunter nuttier snootier runtier punter minuter lintier paintier gaunter counter jauntier hunter haunter chunter tentier vaunter gnattier pointier chaunter taunter daintier snottier saunter rentier mounter knottier mintier nattier nettier neuter nittier nutter shunter
snout snouty snot snoot snooty snotty