To make known in a formal manner; proclaim; announce; declare.To proclaim or declare as impending or threatened; formally or publicly threaten to do or effect; make a menace of: as, to denounce war; to denounce punishment.To proclaim censure or condemnation of; brand publicly; stigmatize; arraign: as, to denounce one as a swindler, or as a coward.To make formal or public accusation against; inform against; accuse: used especially where knowledge of wrongful acts has been acquired confidentially or stealthily: as, to denounce a confederate in crime; to denounce one to the authorities.In Mexican and Spanish mining-law:To lay an information against (a mine) as forfeit because of abandonment, or through being insufficiently worked; hence, to claim the right to work (such a mine) by laying an information against it.To announce and register the discovery of (a new mine or mineral deposit), and thus preëmpt; hence, to lay claim to on the ground of discovery and registry.In diplomacy, to announce the intention of abrogating (a treaty) in accordance with its provisions or arbitrarily.