keep a secret

keep a secret

To not divulge confidential information to anyone else. A: "Hey, can you keep a secret?" B: "Of course. What's going on?" A: "I'm moving to Florida in two months!" Oh, no, don't tell Mary—everyone knows that she can't keep secrets!
See also: keep, secret
Farlex Dictionary of Idioms.

keep a secret

to know a secret and not tell anyone. Please keep our little secret private. Do you know how to keep a secret?
See also: keep, secret
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • Can you keep a secret?
  • Could you keep a secret?
  • on the Q.T.
  • on the QT
  • hungry
  • blaze
  • blazes
  • blazing
  • wild horses couldn't drag (something) from (one)
  • wild horses wouldn't drag (something) from (one)