beginningless adjective2 •Eternal; uncreated; having always existed.Backwards, it spreads to the beginningless beginning. Forwards, it spreads to the endless end. We are always in the middle. — 1980 •Incomplete for lack of a beginning.But besides this imperfect beginningless story, entitled "William Montgomery," we find in the volume another, of which the title-page gives no hint. — 1829