Malicious defamations are serious accusations that can cause harm to an individual or organization's reputation. These types of accusations may include false allegations, slander, or libel. When looking for synonyms to describe malicious defamations, we can use terms such as smear campaigns, character assassination, vilification, calumny, defamation of character, and false accusations. The use of these synonyms emphasizes the harmful effects of such accusations, and highlights the importance of protecting one's reputation. It is important to be aware of these synonyms so that we can communicate more effectively when discussing malicious defamations in legal, professional, or personal contexts.