hasid

noun, plural Ha·sid·im [hah-sid-im, huh-; Ashkenazic Hebrew khaw-see-dim; Sephardic Hebrew khah-see-deem] /hɑˈsɪd ɪm, hə-; Ashkenazic Hebrew xɔˈsi dɪm; Sephardic Hebrew xɑ siˈdim/. Judaism.

1. a member of a sect founded in Poland in the 18th century by Baal Shem-Tov and characterized by its emphasis on mysticism, prayer, ritual strictness, religious zeal, and joy.Compare Mitnagged.
2. an Assidean.