declassify
/diːˈklæsɪfaɪ/
verb
- To officially declare that information (especially government documents) is no longer secret and can be made available to the public.
- After 50 years, the military agreed to declassify the mission details.
- Historians have been asking the agency to declassify the report for years.
- The government decided to declassify the old Cold War files.