Antitactæ, or antitactici, in antiquity, were a sect of gnostics who believe that God was good and just, but that one of his creatures had created evil, and had engaged humans to follow it, in order to set us in opposition to God. They believed that it was the duty of humanity to oppose this author of evil, in order to avenge God of his enemy. Their name is from the ancient Greek for "I oppose; I am contrary".
- This article incorporates text from a publication now in the public domain: Chambers, Ephraim, ed. (1728). "article name needed". Cyclopædia, or an Universal Dictionary of Arts and Sciences (first ed.). James and John Knapton, et al.