To make a solemn declaration or affirmation of; bear witness or testimony to; assert; asseverate; declare: as, to protest one's innocence.To call as a witness in affirming or denying, or to prove an affirmation; appeal to.To declare publicly; publish; make known.To promise solemnly; vow.To declare formally to be insufficiently provided for by deposit or payment: said of a note or bill of exchange, and also, figuratively, of personal credit, statements, etc. See protest, n., 3.Synonyms Protest differs from the words compared under assert (aver, asseverate, etc.) in being more solemn and earnest, and in implying more of previous contradiction or expectation of contradiction (see the quotations above); like them, it is used to make the statement seem certainly true.To bear testimony; affirm with solemnity; make a solemn declaration of a fact or an opinion; asseverate.To make a solemn or formal declaration (often in writing) in condemnation of an act or measure proposed or accomplished: often with against.n. The act of protesting, or that which is protested; an affirmation; asseveration; protestation: now restricted for the most part to a solemn or formal declaration against some act or course of action, by which a person declares (and sometimes has his declaration recorded) that he refuses, or only conditionally yields, his consent to some act to which he might otherwise be assumed to have yielded an unconditional assent: as, to submit under protest; a protest against the action of a committee.n. In law: In a popular sense, all the steps taken to fix the liability of a drawer or indorser of commercial paper when the paper is dishonored.n. Technically, the solemn declaration on the part of the holder of a bill or note against any loss to be sustained by him by reason of the non-acceptanceor non-payment, as the case may be, of the bill or note in question, and the calling of a notary to witness that due steps have been taken to prevent such loss.n. The document authenticating this act.n. A written declaration, usually by the master of a ship, attested by a justice of the peace or a consul, stating the circumstances under which any injury has happened to the ship or cargo, or other circumstances calculated to affect the liability of the owners, officers, crew, etc.n. that the authority of the Bible is supreme, and above that of councils and bishops; andn. that the Bible is not to be interpreted according to tradition, but is to be interpreted by means of itself.