Meaning

verb get lost, as without warning or explanation

verb become invisible or unnoticeable

verb pass away rapidly

originAphetic for obsolete evanish, from Middle English vanyshen, evaneschen, from Old French esvanir, esvaniss- (modern French évanouir), from Vulgar Latin *exvanire (“to vanish, disappear, to fade out”), from Latin evanescere, from vanus (“empty”). By surface analysis, Latin van- + -ish (“verb suffix”). Doublet of evanesce. Displaced native Old English cwincan, whose causative persists as quench…

Etymology from Wiktionary, CC BY-SA 3.0