He·ret'i·cate transitive verb [ Late Latin haereticatus , past participle of haereticare .] To decide to be heresy or a heretic; to denounce as a heretic or heretical. Bp. Hall. « And let no one be minded, on the score of my neoterism, to hereticate me.» F... Found on http://www.encyclo.co.uk/webster/H/36