an instance of apprehending the true nature of a thing, especially through intuitive understanding: an insight into 18th-century life.
penetrating mental vision or discernment; faculty of seeing into inner character or underlying truth.
Psychology. an understanding of relationships that sheds light on or helps solve a problem. (in psychotherapy) the recognition of sources of emotional difficulty. an understanding of the motivational forces behind one's actions, thoughts, or behavior; self-knowledge.
the ability to perceive clearly or deeply; penetration
a penetrating and often sudden understanding, as of a complex situation or problem