Etymograph

English

Jewdar

From Jew + -dar.

A compound of Jew + -dar

Biblical Hebrew יְהוּדָה ‘male given name, Yehuda’

…

Ancient Greek Ἰουδαῖος ‘Jew or Judean’

Latin iūdaeus ‘Judean (i.e. Jew)’

Old French juiu

Middle English Jew

English Jew

Today it means

noun The supposed ability of a person to detect or intuitively sense whether another person is Jewish.

Language periods are conventional ranges, not dates for this word.

Etymograph / Jewdar