zaddik (zæ?di?k) , tzadik , tsadik or tzaddiqn1. (Judaism) a Hasidic Jewish spiritual leader2. (Judaism) a saintly or righteous person according to Jewish faith and practiceCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014zad?dik or tzad?dik (?ts? d?k; Heb. ts??dik) n., pl. zad?di?kim or tzad?di?kim (ts??d?k ?m; Heb. ts? di?kim) 1. a person of outstanding virtue and piety. 2. the leader of a Hasidic group. [1870?75;