Millie is a diminutive of Millicent. Millicent is derived from the Old French Melisende, ultimately originating in Germanic and meaning "strong worker". Millicent has been used as a given name since the Middle Ages.
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Millie is a diminutive of Millicent. Millicent is derived from the Old French Melisende, ultimately originating in Germanic and meaning "strong worker". Millicent has been used as a given name since the Middle Ages.