A state of mind that, in addition to being stilled and settled (Skt. śamatha), is accompanied by an additional sense of fitness – the mental factor of feeling totally fit to discern and understand fully the subtle details of anything. Vipashyana is not necessarily focused on voidness or on the four noble truths, although most commonly in sutra it is.
Tibetan: ལྷག་མཐོང་། lhag-mthong
J. Hopkins: Special insight
Synonyms: Exceptionally perceptive state of mind; Special insight