Source : Webster's Revised Unabridged Dictionary (1913)

Forespeak \Fore*speak"\, v. t. [Obs.]
   See {Forspeak}.

Forespeak \Fore*speak"\, v. t.
   To foretell; to predict. [Obs.]

         My mother was half a witch; never anything that she
         forespake but came to pass.              --Beau. & Fl.