To object to, especially in a formal statement.

To promise or affirm with earnest solemnity: "He continually protested his profound respect" (Frank Norris).

Law To declare (a bill) dishonored or refused.

Archaic To proclaim or make known: "unrough youths that even now/Protest their first of manhood" (Shakespeare).

To express strong objection.

1. A formal declaration of disapproval or objection issued by a concerned person, group, or organization.

2. An individual or collective gesture or display of disapproval.