N accusation, charge, imputation, slur, inculpation, exprobration, delation, crimination, incrimination, accrimination, recrimination, tu quoque argument, invective, denunciation, denouncement, libel, challenge, citation, arraignment, impeachment, appeachment, indictment, bill of indictment, true bill, lawsuit, condemnation, gravamen of a charge, head and front of one's offending, argumentum ad hominem, scandal, scandalum magnatum, accuser, prosecutor, plaintiff, relator, informer, appellant, accused, defendant, prisoner, perpetrator, panel, respondent, litigant, accusing, accusatory, accusative, imputative, denunciatory, recriminatory, criminatory, accused, suspected, under suspicion, under a cloud, under surveillance, in custody, in detention, in the lockup, in the watch house, in the house of detention, accusable, imputable, indefensible, inexcusable, unpardonable, unjustifiable, vicious, Int, look at home, tu quoque, the breath of accusation kills an innocent name, thou can'st not say I did it.

For further exploring for "denouncement" in Webster Dictionary Online