caliginous

1. (archaic or literary) Dark, obscure; murky.Examples: "Hierapolis is ſeated over-againſt Laodicea, where are to be ſeen baths of hot waters, and the Plutonium. [...] The Plutonium is under the brow of the hill, the entrance into which is no wider than that a man can thruſt himſelf through; yet it is very deep within, of a quadrangular form, containing about the compaſs of half an acre, and is filled with ſuch a thick and caliginous air, that the ground cannot be ſeen."; "By the time breakfast was announced, the land had faded into a thin caliginous streak; and, except passing a huge unwieldy Chinese junk, which lay at anchor, though her lateen sails were hoisted, nothing worthy of note occurred during the day."; "Inside the atmosphere was rank and caliginous: fumes rose from puddles, groans sifted through the shadows."Synonyms: blear, caliginous, cimmerian, crepuscular, dark, darksome, darkling, dimAntonyms: darkarchaicliterary