card-carrying adjective3 •Enrolled as a member of an organization, and having a card to prove it; loyal to that organization or the cause it supports.Except for the men in uniform, few in the hail were card-carrying Nazis. But they must have long shared a silent approval of Hitler's goals. — 2004 •Loyal and dedicated to some cause.[Nigel] Toon is a card-carrying enthusiast, arguing for benefits in fields as varied as weather forcasting, drug discovery and nuclear fusion. — 2024 •Official.
