▪ a deep understanding of a person or thing: "the signals would give marine biologists new insights into the behavior of whales"Similarunderstanding ofappreciation ofrevelation aboutillumination ofintroduction toexperience ofdescription ofrealizationrecognitionenlightenmentinformal:aha momenteye-opener
▪ new understanding by a mentally ill person of the causes of their disorder.
Word OriginMiddle English (in the sense ‘inner sight, wisdom’): probably of Scandinavian and Low German origin and related to Swedish insikt, Danish indsigt, Dutch inzicht, and German Einsicht.