1.To involve in darkness; to shroud with the shades of night; to obscure. (Archaic) "The clouds benight the sky."
2.To overtake with night or darkness, especially before the end of a day's journey or task. "Some virgin, sure,... benighted in these woods."
3.To involve in moral darkness, or ignorance; to debar from intellectual light. "Shall we to men benighted The lamp of life deny?"