enantiodromia

The story

1. Ancient Greek · derived fromἐναντιοδρομία“running in a contrary direction”
2. English todayenantiodromia

From Ancient Greek ἐναντιοδρομία (enantiodromía, “running in a contrary direction”), from ἐναντίος (enantíos, “opposite”) + δρόμος (drómos, “running”).

First known use, by meaning

• from 20th c. The principle in Jungian psychology whereby the superabundance of one force inevitably produces its opposite, as with physical equilibrium.