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.
manitos manitous manitus mannites manats mantas mantes mantis mantuas maundies mints mantissa manteaus manatees maunds mounts mondos montes minutes mentees mehndis minuets menudos maenads maenades monetise monodies hymnodies mends minds menads monads mondes mounds monades
bonitos manitos nits nites manitus santos reunites pintos pinites pantos bentos binits bonitoes boniatos bonitas knits sienites dunites tenutos unites kainites finites gentoos gunites dunnites lentos pentose sennits centos kainits puntos snits pintoes tinnitus contos gahnites mannites cantos manitous lenites juntos units
manito manitou manitu manat manatee mannite manta manteau mantua meant amanita