- the state or quality of being dark: The room was in total darkness.
- absence or deficiency of light: the darkness of night.
- wickedness or evil: Satan, the prince of darkness.
- obscurity; concealment: The darkness of the metaphor destroyed its effectiveness.
- lack of knowledge or enlightenment: heathen darkness.
- lack of sight; blindness.
Old English deorcnysse, from dark + -ness. Figurative use is recorded from mid-14c.