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.
mommies mammies mummies momes mommas mamies moms mammeys mammees mimes momus mumms memes mameys mimeos mammas mamboes mems mums maims mamas memos mumus mambas mambos mimosa muumuus
gimmies jemmies immies cammies tammies tummies shimmies jimmies pommies shammies commies chammies jammies whammies mommies mammies yummies tommies dummies rummies mummies zombies mamies lambies shammes ramies femmes amies demies mammeys gimmes momes memes homies roomies mimes mammees mis