What term describes a declaration of disapproval?

The term that describes a declaration of disapproval is "protest." A protest typically involves expressing dissent or objection to certain policies, actions, or situations. It is a way for individuals or groups to voice their disagreement and can take various forms, such as demonstrations, rallies, or public statements. Protests are often organized to raise awareness about specific issues and to urge change or reconsideration of the matter at hand.

In contrast, a petition involves collecting signatures to formally request a change or action from an authority. An endorsement refers to a public statement of support for a person or cause, and a vote of confidence indicates support or approval, usually within a political or organizational context. These terms represent actions that are aligned with approval or support rather than disapproval, making "protest" the most fitting choice for a declaration of disapproval.