Darkness. literal and figurative.

figurative. Want of intellectual or moral perception; delusion, ignorance; folly, recklessness.

Astronomy. The concealment of a celestial object by another; occultation, eclipse. In later use also (more generally): the action of obscuring…

figurative. esp. in reference to imperfect mental illumination or perception.

Physical or mental blindness.

Blinded condition; lack of comprehension; spiritual blindness.

gen. An inability or refusal to acknowledge or accept evidence; lack of understanding. rare.

figurative. Affection of the mental or moral vision.

The state or quality of being crass. Coarseness, grossness (of ignorance, etc.).

figurative. Lack of imagination, foresight, or intellectual insight.

The state or condition of being purblind. Chiefly figurative in later use.

Myopia; an instance or example of this. Now chiefly figurative.

figurative.