darkness
US /ˈdɑːrk.nəs/
UK /ˈdɑːrk.nəs/

1.
the partial or total absence of light
:
•
The room was plunged into complete darkness when the power went out.
•
He was afraid of the darkness.
2.
the state of being evil or morally wrong
:
•
His heart was filled with darkness and hatred.
•
The story explored the darkness of human nature.