shim.shay is a proper name identifying the scribe named with Rehum in Ezra’s correspondence and actions.

The attested forms function consistently as a proper name for the scribe named with Rehum: he is associated with a letter to the king, its recipients, and the subsequent action against Jerusalem.

1. Proper name of the scribe with Rehum · dominant

   All four occurrences are tagged Noun · Proper and identify the same named figure alongside Rehum. In Ezra 4:8 the APB renders Rehum and Shimshai as writing a letter to Artaxerxes; Ezra 4:17 addresses a royal message to them, Ezra 4:23 names them before the action against the Judahites, and Ezra 4:9 places them with their associates.

   Ezra 4:8Ezra 4:9Ezra 4:17Ezra 4:23

In the Anselm Project Bible: Across the cited verses, the APB presents the name as “Shimshai the scribe,” paired with Rehum in correspondence, a royal message, and subsequent action. The descriptive title is confirmed by the verse context rather than treated as a separate lexical meaning.