"As an adjective, "childfree" refers to one who does not have children, does not wish to have them, believes that he or she will never want children, actively plans his or her life so that he or she will not have children, and does not consider his or her life diminished by the absence of children. As a noun, it refers to someone who is childfree or a group of people who are childfree. Another word for this concept is "childless by choice...""