de·​clas·​si·​fy | \ (ˌ)dē-ˈkla-sə-ˌfī How to pronounce declassify (audio) \
declassified; declassifying; declassifies

Definition of declassify

transitive verb

: to remove or reduce the security classification of declassify a secret document

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Other Words from declassify

declassification \ (ˌ)dē-​ˌkla-​sə-​fə-​ˈkā-​shən How to pronounce declassification (audio) \ noun

Examples of declassify in a Sentence

The government has not yet declassified that information.

Recent Examples on the Web

Correction: This story has been corrected to reflect that the American Psychiatric Association formally declassified homosexuality as a mental disorder 40 years ago, not the American Psychological Association. Chris Weller, Newsweek, "Never Scared Straight," 1 May 2014 The endless investigations are one more reason for Mr. Trump to declassify the Justice and FBI documents related to 2016 and put them on the public record. The Editorial Board, WSJ, "How About Some Russia Facts?," 14 Jan. 2019 More charges against Chinese hackers were expected to be unsealed this week, but have been delayed due to an issue involving declassifying intelligence, a U.S. official said. Dustin Volz, WSJ, "Chinese Hackers Breach U.S. Navy Contractors," 14 Dec. 2018 The reports were declassified and approved for public release by the U.S. Central Command months ago as part of an effort to study the history of the Iraq war. Ben Kesling, WSJ, "Declassified Interrogation Reports Show How Much Iran Shaped Iraq War," 30 Aug. 2018 Senate Intelligence Chairman Richard Burr has been a vocal supporter of Haspel's, and has argued that the CIA cannot declassify the materials that Democrats are seeking. Jeremy Herb, CNN, "Haspel faces Senate grilling over CIA's interrogation program," 9 May 2018 After Project Zebra was declassified in 2013, efforts slowly developed to honor it with a monument, which would include three figures — one each of Soviet, U.S. and United Kingdom aviators. Washington Post, "Man on quest for WWII monument will march in Russian parade," 8 May 2018 It was declassified with a volume of other documents concerning Central America and Mexico, between 1973 and 1976. Nora Gámez Torres And Alfonso Chardy, miamiherald, "Declassified document says Posada Carriles likely planned 1976 bombing of Cuban plane | Miami Herald," 4 June 2015 All of which puts an additional onus on Mr. Trump to declassify key FBI and Justice documents sought by Mr. Nunes and other House investigators before Mr. Schiff buries the truth. The Editorial Board, WSJ, "Burying the Other Russia Story," 9 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'declassify.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of declassify

1945, in the meaning defined above

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Last Updated

7 Mar 2019

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Time Traveler for declassify

The first known use of declassify was in 1945

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English Language Learners Definition of declassify

: to allow the public to see or learn about (something that has been a secret)

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Spanish Central: Translation of declassify

Comments on declassify

What made you want to look up declassify? Please tell us where you read or heard it (including the quote, if possible).


to boil down or concentrate

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