Hybris occupies a pivotal position in the depth-psychological corpus as both an ancient Greek moral category and a living diagnostic concept for ego-inflation. The term’s classical meaning—wanton violence, the transgression of divinely ordained limits—is taken up by depth-psychological authors as a precise psychological phenomenon: the ego’s arrogation of powers, attributes, or territory belonging to the suprapersonal Self. Edinger gives the most sustained treatment, tracing hybris through mythological figures such as Ixion and showing how ego-identification with the Self, when prolonged, transforms from inflation into torment—and how the cycle of hybris and nemesis describes an inescapable dialectic in individuation. Jung employs the term diagnostically in multiple registers: rationalistic hybris as the severance of consciousness from its transcendent roots (Aion), the hybris of spiritual presumption in cross-cultural comparisons of mystical identity claims (Psychology and Religion), and the hybris of the alchemically uninitiated will. Sullivan’s philological reconstruction documents the archaic Greek semantic field in which hybris functions as the direct antonym of dike—justice—and shows how Hesiod, Solon, and Theognis all theorize the social and cosmic consequences of its dominance. Together, these voices establish hybris as a term standing at the intersection of Greek moral psychology, archetypal theory, and the therapeutic problem of inflation.