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.
signed seined sinned sained sned saned sunned saunaed sinuate sienite send sand sonde zoned snide sandy scend saint suint sente snood synod sound senate sennet sonnet sundae sundew zooned
feigned deigned reigned signed coigned knead mooned coned leaned hinnied mined awned ponied sained fanned panned pinned lined jeaned beaned hennaed kenned canned seined neoned ruined rained pawned sunned peined fawned saned joined downed tineid yeaned shunned shinned sheened chined wonned wined whined weaned waned tunned toned dinned hymned tanned quoined caned denned gunned manned pined fined ennead paned sned dawned reined keened maned vanned peened vined ginned hyphened phonied canoed moaned loaned deaned pained saunaed funned owned inned foined honed finned sinned gained punned binned zooned boned baned gowned need penned zoned veined monied dined honied coined conned kneed queened tined phoned tuned vaned wanned tyned banned weened whinnied dunned winned chained tinned chinned shined denied shinnied yawned donned yenned
sign sin sain seine sienna sine sinew sinewy sinh