From be- + sot. Compare to Middle English assoten, assotten (“to act foolishly; fall madly in love, become infatuated”).
besot (third-person singular simple present besot, present participle besotting, simple past and past participle besotted or besotten)
- To muddle, stupefy, or act foolishly; as with alcoholic liquor or infatuation.
- You expect me and my men to besot ourselves with your drugs, ... — Robert Sheckley, "Legend of Conquistadors", Fantasy & Science Fiction: Vol. 104, Iss. 4; pg. 50; Apr, 2003