A historical psychological term referring to the practice or experience of adopting clothing and mannerisms traditionally associated with a different gender than one's assigned sex.
Coined in 1913 by German sexologist Magnus Hirschfeld from the Abbé de Choisy's first name 'Eon' (a famous 18th-century French cross-dresser). The term has largely been replaced by modern terminology like 'gender expression' or 'transgender.'
This word is a linguistic fossil—it's named after one person whose life was so unusual and remarkable that their name became a whole category, kind of like how we got 'sandwich' from the Earl of Sandwich!
Term coined in 1880s sexology (Chevalier, Ulrichs) to describe cross-gender identification, named after the Abbé de Choisy's 'Mémoires de l'Abbé de Choisy'. The etymology from 'Eon/Éon' and medical '-ism' suffix reflects 19th-century pathologization of gender variance, treating it as a diagnostic category rather than identity.
This term carries outdated medical pathologization. Contemporary discourse prefers 'gender identity', 'gender variance', or specific identity terms like 'transgender' or 'non-binary' that center lived experience over clinical framing.
["gender identity","gender variance","transgender identity","gender non-conformity"]
The Abbé de Choisy (1644-1724) was a pioneering figure whose gender expression predated modern terminology; naming a condition after her reflects historical erasure of her agency and self-determination.
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