/ Dictionary / Index D declassify: Meaning and Definition of Find definitions for: de•clas•si•fy Pronunciation: (dē-klas'u-fī"), [key] — -fied, -fy•ing. to remove the classification from (information, a document, etc.) that restricts access in terms of secrecy, confidentiality, etc. Cf. classification (def. 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: declassify (Thesaurus) déclassé declension Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language