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Definition of declassification
declassification
/diːˌklæsɪfɪˈkeɪʃən/
de · clas · si · fi · ca · tion
Plural:declassifications
•Adjective:declassified
declassification Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
Rare
Syllables
6
• noun
1
The official act or process of removing the secret or restricted status of government documents or sensitive information, making them accessible to the public.
Example
"Historians welcomed the declassification of the decades-old diplomatic cables, which shed new light on the treaty negotiations."
2
The act of removing an item, entity, or condition from an assigned category or official status.
Example
"The international committee debated the declassification of the substance from its list of prohibited agricultural chemicals."
• Rhymes for declassification
• Nearby Words
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Declassification. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/declassification