(slang, derogatory) One who has no social life; a friendless introvert.

plural of no-lifer

A prisoner sentenced to life in prison. / A prisoner sentenced to transportation for life. / A person with a singular career path, especially in the military.

plural of lifer

plural of liferent

(Scotland, law) The right to receive for life the benefits of a property or other asset, without the right to dispose of it.

One with an interest in artificial life.

plural of A-lifer

A person with pro-life views, or who advocates such policies

One who espouses a position of support for fetuses' right to life; a pro-lifer; one who opposed abortion. / One who is opposed to the legalization of euthanasia.