The Collaborative International Dictionary of English v.0.48:

Besot \Be*sot"\, v. t. [imp. & p. p. Besotted; p. pr. & vb. n.
   Besotting.]
   To make sottish; to make dull or stupid; to stupefy; to
   infatuate.
   [1913 Webster]

         Fools besotted with their crimes.        --Hudibras.
   [1913 Webster]