Dictionary.com
Thesaurus.com

eonism

American  
[ee-uh-niz-uhm] / ˈi əˌnɪz əm /

noun

Psychiatry.
  1. the adoption of feminine mannerisms, clothing, etc., by a male.


eonism British  
/ ˈiːəˌnɪzəm /

noun

  1. psychiatry the adoption of female dress and behaviour by a male See also transvestite

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of eonism

1925–30; after the Chevalier d' Éon (died 1810), Frenchman who posed as a woman

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A seventh volume, on eonism, was added in 1928.

From Time Magazine Archive

This condition I term sexo-esthetic inversion, or Eonism.

From Project Gutenberg

In order to avoid undue increase in the size of this volume, already much larger than in the previous editions, a new Study of Eonism, or sexo-esthetic inversion, will be inserted in vol. v, where it will perhaps be at least as much in place as here.

From Project Gutenberg