Gri·go·ri E·fi·mo·vich /grɪˈgɔri ɪˈfiməvɪtʃ; Russiangryɪˈgɔryi yɪˈfyiməvyɪtʃ/Show Spelled[gri-gawr-ee i-fee-muh-vich; Russiangryi-gaw-ryee yi-fyee-muh-vyich]Show IPA, 1871–1916, Siberian peasant monk who was very influential at the court of Czar Nicholas II and Czarina Alexandra.
2.
any person who exercises great but insidious influence.
Grigori Efimovich (ɡriˈɡɔrij jɪˈfiməvitʃ). ?1871--1916, Siberian peasant monk, notorious for his debauchery, who wielded great influence over Tsarina Alexandra. He was assassinated by a group of Russian noblemen
acquired name (Rus., lit. "debauchee") of Grigory Yefimovich Novykh (c.1872-1916), mystic and faith healer who held sway over court of Nicholas II of Russia. His nickname is from his doctrine of "rebirth through sin," that true holy communion must be proceeded by immersion in sin. His name used figuratively
in Eng. from 1937 for anyone felt to have an insidious and corrupting influence.