ya.eph describes persons needing strength, refreshment, or sustaining help.

The term consistently identifies a person in a condition of diminished strength or need: drink is provided in the wilderness, strength is given where might is absent, and a sustaining word is directed toward such a person.

1. A person needing strength or refreshment · dominant

   In 2 Samuel 16:2, the masculine singular absolute form occurs in the provision of wine for someone to drink in the wilderness. In Isaiah 40:29, the same form stands alongside the one without might as God gives strength; in Isaiah 50:4, it marks the person whom a word is meant to sustain.

   2 Samuel 16:2Isaiah 40:29Isaiah 50:4

In the Anselm Project Bible: The APB presents the term as “the weary” in all three verses: a recipient of wine, of strength, and of sustaining speech. These renderings confirm the clauses' overall presentation rather than isolate an English equivalent in each case.