Definition of declassify
: to remove or reduce the security classification of declassify a secret document
declassificationplay \(ˌ)dē-ˌkla-sə-fə-ˈkā-shən\ noun
Examples of declassify in a sentence
The government has not yet declassified that information.
First Known Use of declassify
DECLASSIFY Defined for English Language Learners
Definition of declassify for English Language Learners
: to allow the public to see or learn about (something that has been a secret)
Seen and Heard
What made you want to look up declassify? Please tell us where you read or heard it (including the quote, if possible).