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.
mantuas mantas manitus manitous manteaus manats mantes mantis maenads manitos mantissa manatees mannites mints maenades maunds montes mounts menudos minuets minutes mentees maundies monetise mends minds menads monads mondes mondos mounds mehndis monades
mantuas conatus tinnitus bonitas fantasy phantasy juntas cantus antas quintas contuse manitus mantas pinatas pintas centas sonatas yentas
mantua manat manatee manito manitou manitu manta manteau meant