What is the defineition ition for insane?

The term "insane" typically refers to a severe mental illness or a state of mind that significantly impairs a person's ability to think clearly, make rational decisions, or understand reality. In legal contexts, it often pertains to an individual's mental competency to stand trial or be held responsible for their actions. The term can also be used colloquially to describe extreme behavior or situations that seem irrational or wildly out of the ordinary.