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.
monad mound mondo menad monde mooned moaned maenad monody monied mend mind manta mined maund maned monte manat menta mount manned maundy hymned mehndi mantua hymnody manatee manteau mint
gonad monad phoned hennaed honda honed hound condo knead mondo fondu panada pond rondo saunaed sound zooned tondo wound mound nada coned monde bound boned bond found menad fond ennead maenad mooned neoned poind pound round sonde zoned tondi toned yond
mon mana mina minae moan money monie mono mony moon moony mown muon myna mynah