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.
manas manias mannas mans manus moans means manse mynas mains minas manes monas manos mynahs muns mons mannose meanies meanness moons monos menus mines hymns minus miens mense munis muons minis hymens menace moneys monies meinies menisci minnies minnows
anas kanas lianas ruanas nanas manas goannas lanais guanays veenas fans leans kanes faenas fanos manus guanos lianes nays mans banns fanes canso janes saunas fauns sans gnaws punas lawns awns ranis bunas pawns kains guans pianos cannas kinase cans hyenas yeans xenias zinnias dawns donas duennas tains siennas tansy unais wains wans whenas chinas tineas scenas pinas quinoas means roans guineas kinas sains manse sunnahs pans vanes minas nans fawns hansa monas vinas lanes anoas pians hennas manos peans anus rains mynahs manias pinnas pains sanes pansy mannas gains guanase queans lauans beanos canes cains jeans beans genoas lunas banes loans koans naos anis hanse anes llanos ansa hyponeas annas bans naans rennase ains mains manes snaws mynas kaons panes nonas paeans moans vans faunas hyaenas taenias yawns sunnas zanza dans deans donnas sennas tenias tans tunas unaus wanes weans chains yuans
mana man myna main mane mania manna mano many mawn maun mean meanie meany mina minae moan mynah