top-secret

[ top-see-krit ]
/ ˈtɒpˈsi krɪt /

adjective (of information, a document, etc.)

bearing the classification top-secret, the highest level of classified information.
limited to persons authorized to use anything so classified. Compare classification(def 5).

Origin of top-secret

First recorded in 1940–45; top1 + secret

Example sentences from the Web for top-secret

British Dictionary definitions for top-secret

top-secret

adjective

containing information whose disclosure would cause exceedingly grave damage to the nation and therefore classified as needing the highest level of secrecy and security