declassify

verb de·clas·si·fy \(ˌ)dē-ˈkla-sə-ˌfī\

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

Full Definition of DECLASSIFY

transitive verb

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

— de·clas·si·fi·ca·tion \(ˌ)dē-ˌkla-sə-fə-ˈkā-shən\ noun

See declassify defined for English-language learners

1945

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