Dark. literal and figurative.

Dark (literal and figurative); = thester, adj.

Of persons, their faculties, etc.; also transferred of things: Lacking in mental perception, discernment, or foresight; destitute of intellectual…

Intellectually or spiritually unenlightened; lacking knowledge, ignorant; uninformed. Now rare.

figurative and in figurative contexts. Unenlightened; gloomy, hopeless.

figurative. Unenlightened, benighted. Obsolete.

Not illuminated by reason, faith, logic, truth, etc.

figurative. Having the understanding darkened; deluded; deceived, benighted, foolish.

Not spiritually or mentally enlightened.

Not enlightened; lacking insight or enlightenment. Now rare.

Blind as a stone; completely blind. figurative. (In quot. 1849 a humorous strengthening of blind, adj. 10.)

Made dark; enveloped in darkness. Chiefly figurative: lacking knowledge, understanding, or insight; marked by a lack of enlightenment.

A state of ignorance. Chiefly in in the dark (about, as to,etc.): in a state of ignorance (about something); lacking knowledge or information (about…

figurative. Involved in intellectual or moral darkness.

Not mentally illuminated; uninstructed.

made dark (in various senses); esp. (figurative) obscured; unenlightened.

Not illuminated by rays of light; figurative not lightened by some positive or beneficial influence.

Made dark (in various senses).