ἀπηνότης
From LSJ
Ποιητὴς, ὁπόταν ἐν τῷ τρίποδι τῆς Μούσης καθίζηται, τότε οὐκ ἔμφρων ἐστίν → Whenever a poet is seated on the Muses' tripod, he is not in his senses
-ητος, ἡ
crueldad ἀπηνότητι ψυχρίας Epiph.Const.Haer.52.2, ἐν τρυφαῖς ... καὶ ἐν ἀπηνότητι Epiph.Const.Haer.76.1.