Haredi Judaism (Hebrew: חֲרֵדִי Ḥaredi, IPA: [χaʁeˈdi]; also spelled Charedi, plural Charedim) is a stream of Orthodox Judaism characterized by rejection of modern secular culture. Its members are often referred to as strictly Orthodox or ultra-Orthodox in English. The term "ultra-Orthodox," however, is considered a derogatory slur by some in the community. Haredim regard themselves as the most religiously authentic group of Jews, although this claim is contested by other streams.
Haredi Judaism emerged in response to the sweeping changes brought upon the Jews in the modern era: emancipation, Enlightenment and the Haskalah movement derived from it, acculturation, secularization, religious Reform in all its forms, Jewish nationalism, etc. In contrast to Modern Orthodox Judaism, which hastened to embrace modernity, the approach of the Haredim was to maintain a steadfast adherence to Jewish religious law by segregating itself from modern society. However, there are Haredi communities in which getting a professional degree and a trade is encouraged and contact exists between Haredi and non-Haredi Jews.