Eonism
noun ·Rare ·Advanced level
Definitions
- 1 The pretence of being the opposite sex, especially that by a man of being a woman; transvestism. uncountable
"The chief of these intermediate sexual anomalies are: (1) physical hermaphroditism in its various stages; (2) gynandromorphism, or eunuchoidism, in which men possess characters resembling those of males who have been early castrated and women possess similarly masculine characters; (3) sexo-esthetic inversion, or Eonism (Hirschfeld's transvestism or cross-dressing), in which, outside the specifically sexual emotions, men possess the tastes of women and women those of men."
Example
More examples"The chief of these intermediate sexual anomalies are: (1) physical hermaphroditism in its various stages; (2) gynandromorphism, or eunuchoidism, in which men possess characters resembling those of males who have been early castrated and women possess similarly masculine characters; (3) sexo-esthetic inversion, or Eonism (Hirschfeld's transvestism or cross-dressing), in which, outside the specifically sexual emotions, men possess the tastes of women and women those of men."
Etymology
Coined in 1920 by the British physician and sexologist Havelock Ellis (1859–1939) after Chevalier d'Eon (1728–1810), a French diplomat, spy and soldier who presented as male for 49 years, then as a female for 33. Ellis had previously used the term sexo-aesthetic inversion.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.