Meaning and name origin
Millie \m(il)-lie\ as a girl's name is of Latin, Old German, Greek, Old English and Old French origin, and the meaning of Millie is "rival, eager work; helper to the priest; bee; honey; gentle strength; brave strength". Millie is a variant of Amelia (Latin, Old German); blend of two medieval names: the Latin Emilia (see Emily) and the Latin German Amalia, meaning "work". Also a variant of Camilla (Latin): feminine of the old Roman family name Camillus, of obscure origin. Millie is also used as a variant of Kamilla (Latin), Melissa (Greek) and Mildred (Old English), Millicent (Old French).
Millie is a very popular first name for females (#655 out of 4276, Top 15%) and a slightly less popular surname or last name for all people (#55435 out of 88799, Top 62%) (Source: 2000 U.S. Population Census).
Displayed below is the baby name popularity of the name Millie for girls. Millie reached its highest rank of #143 in the U.S. in 1880-1889 (Source: 2014 Birth Name Statistics).
Displayed below is a comparison of the popularity of the girl name Millie and its variant forms. Popular variation forms ranked in the Top 1000/100 are Amelia (#15), Melissa (#224), Malia (#345), Camilla (#364), Millie (#505), Millicent, Mellie and Mildred. (Source: 2014 Birth Name Statistics).
Millie▲ is also pronounced similarly to Maillie, Mallie▼, Melli, Milla, Mollee, Molli and Mollie▼. Other suggested similar baby names are Aillie, Billie▼, Gillie, Jillie, Lillie▼, Mille, Milzie, Tillie▼ and Willie▼. These names tend to be less commonly used than Millie.