witan

Old English witan meant 'to know,' from Proto-Germanic *witaną, from Proto-Indo-European *weid-, 'to see, to know.' The noun wit (Old English gewit) meant 'understanding, intelligence, the faculty of knowing.' A person of wit was a person of knowledge. The word had no comic connotation. It was as sober as wisdom, which shares the same root.

The shift began in the sixteenth century. Wit started to mean not just knowledge but the quick application of knowledge — the ability to see connections that others missed, to make unexpected leaps between ideas. This was still intellectual, but it was the intellectual equivalent of speed. A witty person thought faster, saw patterns sooner, arrived at conclusions before the room caught up.

By the Restoration period (1660s), wit had acquired its comic edge. Congreve, Wycherley, and the Restoration dramatists used 'wit' to mean the ability to express surprising truths in elegant, often funny language. A wit was a social performer. Wit was conversation as competitive sport, and the wittiest person in the room held the most power.

Modern English uses wit almost exclusively for humor — especially humor that demonstrates intelligence. A witty remark is a clever one. Wit is what separates a joke from a mere gag. But the Old English foundation has not disappeared: we still sense that true wit requires knowledge. A witty person knows something. The joke is proof of the knowing.