Hasidim Look up Hasidim at Dictionary.com
also Chasidim, 1812, adherents of a conservative Jewish religious movement founded 1750 by Rabbi Israel ben Eliezer Baal Shem Tobh, from Hebrew hasidhim, literally "pious ones," plural of hasidh "kind, pious." Earlier used in Hebrew of adherents of an anti-Hellenistic faction during the time of the Maccabean Wars.