sot n.

late Old English sott "stupid person, fool," a sense now obsolete, from Old French sot, from Gallo-Roman *sott- (probably related to Medieval Latin sottus), a word of uncertain origin, with cognates from Portugal to Germany. The surviving English meaning "one who is stupefied with drink, one who commonly drinks to excess" is attested by 1590s. As a verb, it is attested from c. 1200, but this is usually besot.