prognosticate (v.)

"foretell by means of present signs," early 15c., prenosticaten, a back-formation from prognostication and also from Medieval Latin prognosticatus, past participle of prognosticare"foretell," from Latin prognostica "sign to forecast weather," from neuter plural of Greek prognōstikos "foreknowing," from progignōskein (see prognosis). Related: Prognosticated; prognosticating.