% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Other crossword clues for answer "TOPSECRET"

TOPSECRET
Highest level of classified information
Clandestine
Like an eyes-only document, say
Like many briefings Obama is privy to
Very best 64-Across?
Upper-level clearance level
Highly classified
Hush-hush
For certain eyes only
Not to be shared
Very hush-hush
Strictly hush-hush.
Not to be disclosed.
Classified.
Popular official stamp
Like the Manhattan Project
Known to next to none
Phrase often stamped in red
Upper-level security clearance status
On a need-to-know basis
Extremely hush-hush
Hush-hush, and a hint to the starred answers' starts
Phrase on some government documents