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.
sienite sente seniti senate sennit snit sent sinuate senti suint saint snide scent sennet sanity cenote cent send snot santo snout snoot cento centu scend sinned snooty snotty sained sonnet signed sonata centai snouty seined zonate zenaida
lenite sienite nite unite dunnite denote kainite reunite enate finite hyphenate phenate gahnite gunite senate mannite kente mentee pinite rente cenote seniti sente lenity sennit denied dunite tentie yente nit