characterized by oppressive heat and humidity; "the summer was sultry and oppressive"; "the stifling atmosphere"; "the sulfurous atmosphere preceding a thunderstorm"
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