Other crossword clues for answer "TOPSECRET"TOPSECRETHighest level of classified informationClandestineLike an eyes-only document, sayLike many briefings Obama is privy toClearance levelVery best 64-Across?Upper-level clearance levelHighly classifiedHush-hushNot to be sharedVery hush-hushStrictly hush-hush.Not to be disclosed.Classified.Popular official stampLike the Manhattan ProjectKnown to next to nonePhrase often stamped in redUpper-level security clearance statusOn a need-to-know basisExtremely hush-hushHush-hush, and a hint to the starred answers' startsPhrase on some government documents