mor.de.khay designates the Jewish man whose actions and standing are narrated throughout Esther.

The proper noun consistently designates the same Jewish man in Esther: Esther’s guardian and correspondent, Haman’s opponent, a recipient of royal honor, and an official who issues commands and letters.

1. The man named in the Esther narrative · dominant

   The form is tagged Noun · Proper throughout and identifies the same individual in varying narrative relations. In Esther 2:7 the APB renders him as the one who brought up Esther and took her as his daughter; in Esther 3:2 it identifies the man who would not bow to Haman; and in Esther 8:9 it names the person whose commands directed the letter to Jews and provincial officials.

   Esther 2:7Esther 3:2Esther 4:13Esther 6:11Esther 8:9Esther 10:3

In the Anselm Project Bible: The APB regularly presents the proper name as “Mordecai,” sometimes with “the Jew,” as in Esther 3:2 and Esther 10:3. Its surrounding descriptions identify the named person’s actions and status rather than supplying a separate lexical rendering.