unenlightened

verb (used with object)

1. to give intellectual or spiritual light to; instruct; impart knowledge to: We hope the results of our research will enlighten our colleagues.
2. Archaic. to shed light upon.

adjective

1. not well-informed, tolerant, or rationala most backward, unenlightened nation

verb (tr)

1. to give information or understanding to; instruct; edify
2. to free from ignorance, prejudice, or superstition
3. to give spiritual or religious revelation to
4. poetic to shed light on

adj.1660s, “not lit up,” from un- (1) “not” + past participle of enlighten. Meaning “not mentally illuminated” is attested from 1650s. v.late 14c., “to remove the dimness or blindness (usually figurative) from one’s eyes or heart;” see en- (1) + lighten. Old English had inlihtan. Related: Enlightened; enlightening.