denounce

sense 1: speak out against; "He denounced the Nazis"
denounce

sense 2: to accuse or condemn or openly or formally or brand as disgraceful; "He denounced the government action"; "She was stigmatized by society because she had a child out of wedlock"
stigmatize stigmatise brand denounce mark

sense 3: announce the termination of, as of treaties
denounce

sense 4: give away information about somebody; "He told on his classmate who had cheated on the exam"
denounce tell_on betray give_away rat grass peach shit shop snitch stag