forepossessed adjective2 •(no longer used) Preengaged; preoccupied; prepossessed.VVherein I doubt not by Gods help, but to make clear to the judgment of any man, that it is not either uncapable through ignorance, or fore-possessed with prejudice, these three things. — 1641 •(no longer used) Holding or held formerly in possession. formsmore forepossessed · most forepossessed