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ambivalence

/æmˈbɪvələns/ noun

Latin root: ambi Coined: 1910, by Eugen Bleuler Wiktionary

Origin

Borrowed from German Ambivalenz (“simultaneous conflicting feelings”), from Latin ambi- (“both”) and valentia (“strength”), from the verb valere (“to be strong”) (see valiant); spelled on the model of French-origin words ending in -ence. The German term was coined by Swiss psychiatrist Eugen Bleuler in 1910; by 1929, it had taken on a broader literary and general sense. Equivalent to ambi- + valence.

From Wiktionary, via Kaikki.org (CC BY-SA)