From Middle English wit, from Old English witt ("understanding, intellect, sense, knowledge, consciousness, conscience"), from Proto-West Germanic *witi, from Proto-Germanic *witją ("knowledge, reason"), from Proto-Indo-European *weyd- ("see, know").
Cognate with Dutch weet, German Witz, Danish vid, Swedish vett, Norwegian Bokmål vett, Gothic 𐌿𐌽𐍅𐌹𐍄𐌹 ("ignorance"), Latin videō ("see"), Bulgarian ви́дя, Russian ви́деть, Sanskrit विद्या. Compare wise.
From Middle English witen, from Old English witan, from Proto-West Germanic *witan, from Proto-Germanic *witaną, from Proto-Indo-European *weyd- ("see, know").
Cognate with Icelandic vita, Dutch weten, German wissen, Swedish veta, and Latin videō ("I see"). Compare guide.