Infancy /(?)/

In·fan·cy

Infancy

n.
  1. The state or period of being an infant; the first part of life; early childhood.
    The babe yet lies in smiling infancy.
    Their love in early infancy began.
  2. The first age of anything; the beginning or early period of existence; as, the infancy of an art.
    The infancy and the grandeur of Rome.
  3. The state or condition of one under age, or under the age of twenty-one years; nonage; minority. (Law)