To involve in darkness; to shroud with the shades of night; to obscure.
To overtake with night or darkness, especially before the end of a day's journey or task.
To involve in moral darkness, or ignorance; to debar from intellectual light.
overtake with darkness or night
envelop with social, intellectual, or moral darkness; "The benighted peoples of this area"
make difficult to perceive by sight; "The foliage of the huge tree obscures the view of the lake"