ultra-secret
adjective
(alsoultrasecret)uk/ˌʌl.trəˈsiː.krət/us/ˌʌl.trəˈsiː.krət/extremelysecret(=keptfrom beingseenorknownbyothers):
He had beenpartof anelite, ultra-secretspyunit, but he was neverabletospeakabout what hesawbehindenemylines.
Ultrasecretclassifieddocumentshadfalleninto the enemy'shands.
- She wasworkingfor thePentagonaspartof an ultra-secretintelligencegatheringoperation.
- Thecriminalmastermindwasoperatingout of an ultrasecretfortresshiddeninside acave.
- Thisprojectis ultra-secret; you cannotsharewhat youknowwith anyone.
Secrecy and privacy
- anonymity
- anonymization
- anonymize
- anonymous
- anonymously
- cryptography
- data protection
- dead men tell no talesidiom
- dissimulate
- dissimulation
- privacy settings
- private
- privately
- privileged
- pseudonym
- undisclosed
- whitewash
- whitewashing
- wrap
- wrapped (up) in secrecyidiom