the flash of light that accompanies an electric discharge in the atmosphere (or something resembling such a flash); can scintillate for a second or more
abrupt electric discharge from cloud to cloud or from cloud to earth accompanied by the emission of light
furiously angry; "willful stupidity makes him absolutely livid"
(of a light) imparting a deathlike luminosity; "livid lightning streaked the sky"; "a thousand flambeaux...turned all at once that deep gloom into a livid and preternatural day"- E.A.Poe
afflicted with or marked by anxious uneasiness or trouble or grief; "too upset to say anything"; "spent many disquieted moments"; "distressed about her son's leaving home"; "lapsed into disturbed sleep"; "worried parents"; "a worried frown"; "one last worried check of the sleeping children"