Definitions

1. verb

to remove from or cease to use a classification system, or to stop considering someone or something as belonging to a particular category.

“The researcher’s decision to unclassify the confidential data sparked controversy among the team.”

2. verb

to assign a new category or classification to something that was previously unknown or unclassified.

“New evidence led scientists to unclassify the mysterious creature as a previously unknown species.”

3. verb

to declare something to be no longer secret or confidential.

“The government was forced to unclassify the documents, revealing the extent of the cover-up.”