Compulsion (kum-PUHL-shun)
Origin
From Late Latin compulsio, meaning “constraint” or “coercion,” derived from Latin compellere, meaning “to drive together, force, or compel.”
Language Root
Latin — com- (“together”) + pellere (“to drive” or “push”).
Original Meaning
The act of forcing, driving, or compelling someone to do something, particularly through external pressure or authority.
Evolution Over Time
Compulsion originally centered on external force—something a person was made to do. Over time, the idea of force moved inward. The word came to describe powerful internal urges that feel difficult to resist. In psychology and psychiatry, “compulsion” developed a more specific meaning involving repetitive behaviors or mental acts a person feels driven to perform, often according to rigid rules or in response to an obsession.
Modern Usage
A powerful urge or feeling of being driven to perform an action. In clinical contexts, a compulsion is a repetitive behavior or mental act that a person feels driven to perform, including those associated with obsessive-compulsive disorder.
Narrative
Compulsion began with force coming from the outside. Its Latin ancestor compellere meant to drive or force someone toward an action. Eventually, language turned that pressure inward. A person could feel compelled even when nobody else was giving the command. That shift captures what makes the modern word so powerful: the person experiencing a compulsion may recognize the pressure as coming from within and still experience it as difficult to resist. The invisible force replaced the visible one, but the ancient idea of being driven remained.