1. complete disorder and confusion: "snow caused chaos in the region"
▪ behavior so unpredictable as to appear random, owing to great sensitivity to small changes in conditions.
▪ the formless matter supposed to have existed before the creation of the universe.
▪ the first created being, from which came the primeval deities Gaia, Tartarus, Erebus, and Nyx.
Word Originlate 15th century (denoting a gaping void or chasm, later formless primordial matter): via French and Latin from Greek khaos ‘vast chasm, void’.
