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declassify

verb [T]
 
 
/ˌdiːˈklæs.ɪ.faɪ/

Definition

to say officially that political or military information is no longer secret: Many government documents are declassified after 50 years.Revealing secrets and becoming known declassification
 
 
/ˌdiː.klæs.ɪ.fɪˈkeɪ.ʃən/ noun [U]
Revealing secrets and becoming known
(Definition of declassify verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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