de classify

declassify

[dee-klas-uh-fahy]
verb (used with object), declassified, declassifying.
to remove the classification from (information, a document, etc.) that restricts access in terms of secrecy, confidentiality, etc. Compare classification ( def 5 ).

Origin:
1860–65; de- + classify

declassifiable, adjective
declassification [dee-klas-uh-fi-key-shuhn] , noun
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World English Dictionary
declassify (diːˈklæsɪˌfaɪ)
 
vb , -fies, -fying, -fied
(tr) to release (a document or information) from the security list
 
de'classifiable
 
adj
 
declassifi'cation
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

declassify
1865, originally a term in logic; with reference to state secrets, 1946; from de- + classify.
Online Etymology Dictionary, © 2010 Douglas Harper
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