Gloomy — black — hidden (4)
I believe the answer is:
dark
(Other definitions for dark that I've seen before include "sinister and > bleak" , "Unlit" , "Dismal" , "Overcast" , "Absence of light" .)
I believe the answer is:
dark
(Other definitions for dark that I've seen before include "sinister and > bleak" , "Unlit" , "Dismal" , "Overcast" , "Absence of light" .)