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Haredim

The most recognizable sub-group is the Haredim (literally, 'trembling' or 'fervent'), also known as "strictly Orthodox", and the like. They are the most traditional part of the Orthodox. Haredim have minimal engagement with/wholesale rejection of modern society, avow precedence to religious values, and accept a high degree of rabbinic involvement in daily life. Haredi rabbis and communities generally accept each other, and accord them legitimacy. They are organized in large political structures, mainly Agudath Israel of America and the Israeli United Torah Judaism party. Other organized groups include the Anti-Zionist Central Rabbinical Congress and the Edah HaChareidis. They are easily discerned by their mode of dress, often mostly black for men and very modest, by religious standards, for women (including hair covering, long skirts, etc.).

The ultra-Orthodox may be roughly classified into three sub-groups: