Berserkly is an adverb that describes someone or something that behaves in a wild, uncontrolled, and aggressive manner. There are many synonyms for the word berserkly such as frantically, wildly, furiously, violently, maniacally, frenziedly, and uncontrollably. Each of these words describes a person or an action that is out of control. For example, a person who is running around screaming and breaking things can be described as acting frantically or maniacally. Similarly, a storm that causes destruction and chaos could be described as raging violently or wildly. Whatever the case may be, berserkly is a powerful word that represents a state of extreme behavior.