Obscurity

безве́стность

bezvéstnostʹ

(The state of being unknown; a thing that is unknown)

мрак

mrak

(darkness; the absence of light)

неизве́стность

neizvéstnostʹ

(The state of being unknown; a thing that is unknown)

нея́сность

nejásnostʹ

(The quality of being difficult to understand; a thing that is difficult to understand)

темнота́

temnotá

(darkness; the absence of light)

тьма

tʹma

(darkness; the absence of light)