under lock and key
idiom
: in a room, box, etc., that is locked
The jewels are kept under lock and key.
The prisoner is being kept/held under lock and key.
Examples of under lock and key in a Sentence
Recent Examples on the Web
Details are being kept under lock and key but the project has been described as Memento meets Raiders of the Lost Ark.
Skydance did not comment on the dealmaking.
Andrew Schneider will exec produce.
—
Borys Kit, HollywoodReporter, 22 May 2025
For years Ross kept Sterns under lock and key, using him to keep himself alive.
—Ross Rosenfeld, Newsweek, 26 Feb. 2025
The acting is grounded in realism but the writing refuses to keep the characters under lock and key.
—Charles McNulty, Los Angeles Times, 28 Apr. 2025
The researcher says that CDC guidelines direct employees to keep physical samples and accompanying personally identifiable information under lock and key, and only certain authorized staff are permitted to access them.
—Caroline Haskins, Wired News, 17 Apr. 2025
See All Example Sentences for under lock and key
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Borys Kit, HollywoodReporter, 22 May 2025
For years Ross kept Sterns under lock and key, using him to keep himself alive.
—Ross Rosenfeld, Newsweek, 26 Feb. 2025
The acting is grounded in realism but the writing refuses to keep the characters under lock and key.
—Charles McNulty, Los Angeles Times, 28 Apr. 2025
The researcher says that CDC guidelines direct employees to keep physical samples and accompanying personally identifiable information under lock and key, and only certain authorized staff are permitted to access them.
—Caroline Haskins, Wired News, 17 Apr. 2025
See All Example Sentences for under lock and key
Cite this Entry
“Under lock and key.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/under%20lock%20and%20key. Accessed 7 Jun. 2025.
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