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gaydar

[gey-dahr]
noun Informal.
  1. a person's purported intuitive or sensing ability to identify homosexuals.
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Origin of gaydar

1980–85; gay + (ra)dar
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for gaydar

gaydar

noun
  1. informal the supposed ability of a homosexual person to recognize whether another person is homosexual
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Word Origin for gaydar

C20 from gay + (ra) dar
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

Word Origin and History for gaydar

n.

by 1996, in gay literature, from gay + radar.

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Online Etymology Dictionary, © 2010 Douglas Harper