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.
vermin vermian fermion ferryman ferrymen foramina pheromone firman fireman firemen foreman foremen freeman freemen
harmin dormin vermin crimini firman barman doormen sermon primine cremini airman merman barmen germina german remain rumina termini chairman pearmain airmen carmen crimine criminy mermen fermion bromine ermine doorman promine tyramine bromin permian foramina carman carmine germen harmine vermian chairmen