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.
maenad menad mend manat maund monad maned menta manta manned maundy mehndi menudo mantua moaned manatee manteau mind mondo mined meant mound hymned manito manitu mentee monied monody mooned hymnody manitou mannite
maenad menad end saunaed wend tendu vend teind hyphened send gonad shend lend pend kendo panada keened menta queened knead hennaed nada weened tend duende scend rend monad peened fiend bend bendy ennead fend mend sheened yenta
man men amen mien meno main mana mane mania manna mano maun many mawn mean meanie meany meinie meiny menu moan omen