to wall up/off
ga.dar describes building or repairing a wall or barrier, and blocking a person's way or exit.
The attested uses chiefly concern making, restoring, or repairing a protective wall, especially at breaches and ruins; several verses instead depict a way or person enclosed so that passage is impossible. One occurrence, Hosea 2:8, has a first-person singular perfect form, but the supplied translation does not make its specific contribution identifiable.
Senses in use
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Building or restoring a protective barrier · dominant
The participial forms occur among workers repairing a house in 2 Kings 12:13 and 2 Kings 22:6; the APB renders those contexts with craftsmen, builders, masons, and repair work. In Amos 9:11 the first-person form is used of closing breaches in David's fallen booth, while Ezekiel 13:5, Ezekiel 22:30, and Isaiah 58:12 place the action at a wall, a breach, broken walls, or restoration.
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Closing off a route or confining someone · common
In Job 19:8, the third-person perfect concerns a way that cannot be passed. Lamentations 3:7 uses the same perfect form of being unable to come out, and Lamentations 3:9 applies it to ways enclosed with hewn stone and made twisted.
In the Anselm Project Bible: Where the clause is clear, the APB uses "wall up," "build up a wall," and descriptions of repairing or restoring broken walls. In Job 19:8 and Lamentations 3:7 the translation presents the result as blocked passage or confinement; Hosea 2:8 does not visibly isolate the term's contribution.