Word: Jewdar
Part of speech: Noun
Syllables: jew
dar
Definition: The supposed ability of a person to detect or intuitively sense whether another person is a Jew.
Morphemes:
Affix: Jew
Language: en
PoS: Verb
Meaning: alternative case form of jew.
Etymology Compounds: Affix: iūdaeus
Language: la
Decoded: iudaeus
Meaning: Judean 
Affix: -dar
Language: en
PoS: Suffix
Meaning: Forming nouns denoting a putative ability to detect a thing.