Yiddishkeit
Yiddishkeit (Yiddish: ייִדישקייט — yidishkeyt using the YIVO transliteration rules, yidishkayt in quasi-phonetic transcription) literally means "Jewishness", i. e. "a Jewish way of life", in the Yiddish language. It can refer to Judaism or forms of Orthodox Judaism when used by religious or Orthodox Jews. In a more general sense it has come to mean the "Jewishness" or "Jewish essence" of Ashkenazi Jews in general and the traditional Yiddish-speaking Jews of Eastern and Central Europe in particular.
From a more secular perspective it is associated with the popular culture or folk practices of Yiddish-speaking Jews, such as popular religious traditions, Eastern European Jewish food, Yiddish humour, shtetl life, and klezmer music, among other things.
Before the Haskalah and the emancipation of Jews in Europe, central to Yiddishkeit were Torah study and Talmudical studies for men, and a family and communal life governed by the observance of Jewish Law for men and women. Among Haredi Jews of Eastern European descent, who compose the majority of Jews who still speak Yiddish in their everyday lives, the word has retained this meaning.