swear (one) to secrecy

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swear (one) to secrecy

To make one promise that they won't reveal something that they know about. The company swore me to secrecy before promoting me to work on their latest product. OK, I'll tell you, but I have to swear you to secrecy!
See also: secrecy, swear, to
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

swear somebody to ˈsecrecy

make somebody promise not to tell a secret: Before telling her what happened, I had sworn her to secrecy.Everyone was sworn to secrecy about what had happened.
See also: secrecy, somebody, swear, to
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
THE STORY Sorority sisters (including Briana Evigan and Jamie Chung) swear to secrecy when a prank goes fatally wrong.
Fear for the bird's safety inspired them to swear to secrecy the dozens of people who worked for more than a year on the project.