classified
material
Notes on classified material must not be removed from this room without permission.
We believe that releasing this classified material would jeopardize national security.
He refused to provide details about what classified materials had been destroyed.
SMART Vocabulary: related words and phrases
Secrecy and privacy
anonymity
anonymization
anonymize
anonymous
anonymously
data protection
dead men tell no talesidiom
dissimulate
dissimulation
down-low
on the quietidiom
privacy
privacy settings
private
privately
under wrapsidiom
undisclosed
unrevealed
unsourced
unstated