wist

Not to thee, quoth he, thou art a Norwegian, as I wist by thy tongue.

(You may) dig the deep foundations of a long-abiding 30 fame, / And wist not that they undermine (your) home of love and peace.

The Bishop of Meath was assured by one of his flock that, "if the country wist how, they would eat you."

There are other powers in motion beneath its surface, which they wist not of, and whose might they can neither direct or control.

Then Sir Launcelot was put to a great pass of anxiety, for he wist not what to do to escape from that danger in which he lay.