Millie

Millie is an English feminine name that originated as a diminutive of longer names beginning with Mil-, most commonly Mildred and Millicent. Mildred derives from the Old English elements milde, meaning gentle or mild, and þryð, meaning strength, while Millicent traces back through Old French to the Germanic elements amal, associated with the Amal dynasty of the Goths, and swinth, meaning strength. Millie gained wide independent use as a given name during the nineteenth century and remains popular in English-speaking countries today. Related names include Milly, Mildred, and Millicent.