Deprecate (verb)

1. To express disapproval or disappointment about something or someone.
2. To belittle or undervalue something or someone.

Origin:

From the latin word "deprecari" meaning "to pray against".

Examples:

1. He deprecated the company's decision to lay off so many employees.
2. She deprecated his behavior as being unprofessional.
3. The teacher deprecated the student's lack of effort on the project.
4. The company deprecated the new policy as being too restrictive.
5. The manager deprecated the employee's poor performance.