caliginous

from WordNet (r) 3.0 (2006)

caliginous
    adj 1: dark and misty and gloomy

from The Collaborative International Dictionary of English v.0.48

Caliginous \Ca*lig"i*nous\, a. [L. caliginosus; cf. F.
   caligineux.]
   Affected with darkness or dimness; dark; obscure. [R.]
   --Blount.
   [1913 Webster]

         The caliginous regions of the air.       --Hallywell.
   -- {Ca*lig"i*nous*ly}, adv. -- {Ca*lig"i*nous*ness}, n.
   [1913 Webster]