From which Latin word, suggesting erratic behavior, is the concept of 'lunacy' derived?

Answer

Luna

The term 'lunacy' directly ties the concept of erratic or abnormal mental states to the moon. This word originates from the Latin term *luna*, which is the word for the moon itself. This etymological connection reflects a historical cultural understanding that the celestial body exerted a powerful, often disruptive, influence on human mental faculties, leading to assumptions about spikes in restlessness, irritability, or aggressive behavior coinciding with the full moon phase.

From which Latin word, suggesting erratic behavior, is the concept of 'lunacy' derived?

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