dark, darkness - absence of light or illumination

overcast, cloudiness - gloomy semidarkness caused by cloud cover

shade, shadiness, shadowiness - relative darkness caused by light rays being intercepted by an opaque body; "it is much cooler in the shade"; "there's too much shadiness to take good photographs"

dimness, duskiness - the state of being poorly illuminated

gloom, somberness, sombreness - a state of partial or total darkness; "he struck a match to dispell the gloom"

obscureness, obscurity - the state of being indistinct or indefinite for lack of adequate illumination