to condemn or censure openly or publicly: to denounce a politician as morally corrupt.
2.
to make a formal accusation against, as to the police or in a court.
3.
to give formal notice of the termination or denial of (a treaty, pact, agreement, or the like).
4.
Archaic. to announce or proclaim, especially as something evil or calamitous.
5.
Obsolete. to portend.
Origin: 1250–1300; Middle English denouncen < Old French denoncier to speak out < Latin dēnuntiāre to threaten (dē-de- + nuntiāre to announce, derivative of nuntius messenger)