Emmilie is a female name.
Emmilie is considered a female form of Emil/Emilio or Aemilius. The Aemilians were one of the five most influential patrician families in ancient Rome.
The original form of Emmilie is “Aemilia”. Emmilie therefore means “coming from the Aemilian family”. This in turn is derived from the Latin “aemulus”, which means “emulate”, “compete”. That is why Emmilie also has the meaning “the eager”, “the industrious” or “the ambitious”.