← DefinitionshareGuessbaresarknounA wild, fierce, or uncontrollable person; someone who behaves with extreme aggression or violence.adjectiveFrenzied, violent, or out of control; acting with wild aggression.SynonymsberserkernounmadmannounmaniacnounfrenziedadjectivewildadjectiveviolentadjectiveAntonymscalmadjectivepeacefuladjective