1. the act of expressing disapproval or objection to something
Usage: formal; often used in contexts of protest or disagreement
2. an earnest request or plea to someone to reconsider or refrain from doing something
Usage: formal; often implies a humble or urgent appeal
3. in computing, the marking of code or features as outdated and discouraged from use, though still functional
Usage: technical; used in software development

Examples

• The senator's deprecation of the new policy was met with mixed reactions from her colleagues.
• Despite her deprecation, the company proceeded with the merger.
• The teacher made a deprecation to the students to stop talking during the exam.
• The software library issued a deprecation warning for the old function.
• His deprecation of violence was a central theme in his speeches.
• The community's deprecation of the proposed development plan led to its rejection.