top secretadjective
uk/ˌtɒp ˈsiː.krət/us/ˌtɑːp ˈsiː.krət/(of information) extremely secret and not to be told to anyone outside a particular group of people:
These papers are top secret.
[ before noun ] a top-secret military research project
Thesaurus: synonyms and related words
Secrecy and privacy
- anonymity
- anonymize
- anonymous
- backroom
- backstage
- counsel
- dissimulate
- dissimulation
- entre nous
- executive privilege
- furtive
- lid
- lip
- private
- privately
- privileged
- sanctum
- secrecy
- skeleton
- sweep
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