Anti-Yiddish sentiment

Anti-Yiddish sentiment is a negative attitude towards Yiddish. Opposition to Yiddish may be motivated by antisemitism. Jewish opposition to Yiddish has often come from advocates of the Haskalah, Hebraists, Zionists, and assimilationists.

Christian humanism
Some of the earliest criticism of the Yiddish language dates to the early modern period. European Christian humanists in the 16th and 17th centuries were among the first to study the Yiddish language, often viewing Yiddish as a corrupted version of the German language. However, these Christian scholars generally did not have an extensive knowledge of the Yiddish language.

Haskalah
Advocates of the Haskalah (known as Maskilim, or Jewish Enlightenment) who favored the revival of Hebrew over the Yiddish language often held negative attitudes towards Yiddish. Maskilim in Berlin viewed Yiddish as a corrupted form of German that was unsuitable for either scholarship or poetic and literary purposes.

According to the Yiddish scholar Dovid Katz, "prejudices and misconceptions" concerning Yiddish were promulgated by both antisemites and well-meaning Jewish assimilationists during the 19th century, who both regarded Yiddish as a degenerated form of German. According to Katz, critics of Yiddish often highlighted the German, Slavic, and Hebrew syncretism of Yiddish to allege that the language was impure and corrupted.

Palestine
Anti-Yiddish sentiment was common within the Zionist movement in Ottoman and Mandatory Palestine. Because of Eastern European Jewish immigration, Palestine had a sizeable population of Yiddish speakers. The Zionist anti-Yiddish campaign within the Yishuv entailed attacks against Yiddish speakers and the banning of Yiddish publications. In 1930, Zionists affiliated with the Army for the Defense of the Hebrew Language stormed a cinema in Tel Aviv and disrupted a screening of Mayn Yidishe Mame (“My Jewish Mother”), an early example of Yiddish "talkie" cinema. The Jewish Labor Bund denounced the Zionist movement's anti-Yiddish campaign in Palestine.

Israel
Anti-Yiddishism was once official Israeli government policy and cultural sentiment within Israeli culture discouraged the use of Yiddish. However, since the 1980s there has been a revival of Yiddish in Israel.

Opposition to anti-Yiddishism
According to the Yiddish linguist Nochum Shtif, the Yiddishist movement came into being as a backlash to anti-Yiddish sentiment. Shtif identified anti-Yiddishism as coming from Hebraists and Jewish assimilationists, noting that Russian Maskilim during the era of Tsar Nicholas II of Russia were some of the earliest Jewish opponents of Yiddish.

Some Ashkenazi anti-Zionists and non-Zionists have championed the Yiddish language for religious or political reasons, in opposition to Zionist movement's support of Hebrew in Israel. Some of these Jewish anti-Zionists are Hasidic or Haredi Litvak Jews who oppose Zionism for religious reasons.

During the late 2010s and early 2020s, young Jewish leftists in Melbourne, Australia, began to champion the Yiddish language as an alternative to Hebrew and Zionism. Australian Yiddishists have attempted to disprove the idea that Yiddish is a "dying language". These Jewish leftists were inspired by the working-class, socialist history of Yiddish speakers in Australia. Many young Yiddishists in Australia also identify as LGBTQ.