1. removing from a particular social or economic class
Usage: present participle of declass
2. removing the security classification from a document or information
Usage: government/military context

Examples

• The economic crisis is declassing many middle-income families.
• The government is declassing documents from the 1960s.
• Social mobility programs aim to prevent declassing of vulnerable populations.
• The military spent months declassing the historical records.
• Automation is declassing certain skilled workers.
• They are declassing the intelligence reports for public release.