#1 enlighten v. [edify] make understand; "Can you enlighten me--I don't understand this proposal". wn
#2 enlighten v. [irradiate] give spiritual insight to; in religion. wn
#3 enlighten v. [clear, clear up, shed light on, crystallize, crystallise, crystalize, crystalise, straighten out, sort out, illuminate, elucidate] make free from confusion or ambiguity; make clear; "Could you clarify these remarks?"; "Clear up the question of who is at fault". wn
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