1 accuse publicly; condemn (denounced him as a traitor).
2 inform against (denounced her to the police).
3 give notice of the termination of (an armistice, treaty, etc.).
Derivatives:
denouncement n. denouncer n.
Etymology: ME f. OF denoncier f. L denuntiare (as DE-, nuntiare make known f. nuntius messenger)
Useful english dictionary. 2012.