oppression: the crushing weight a stronger party presses down on someone, and the hardship of living under it
This is the noun that belongs with the verb "to press, squeeze, crush" (לָחַץ). The picture underneath it is physical: a weight bearing down, a body shoved against a wall. So the word does not name a mood or a private sadness. It names pressure, and it assumes someone strong enough to apply it.
Every use has the same shape, a stronger hand pressing and a weaker party feeling it:
- Egypt bearing down on the Israelites in Exodus 3:9
- the king of Aram bearing down on Israel in 2 Kings 13:4
- an enemy bearing down on one worshiper in Psalm 42:9 and Psalm 43:2
That is why the word keeps company with the prayers of people who have run out of other options. Deuteronomy 26:7 stacks it with two neighbors, affliction (עֳנִי) and toil (עָמָל), as the third thing God saw in Egypt.
One old phrase puts the word on a plate. To feed a prisoner "bread of oppression and water of oppression" (1 Kings 22:27) is to hand him the deliberately meager ration of a man in custody, and Isaiah 30:20 borrows that phrase for the hard schooling God serves his own people. Job 36:15 is the one place with no oppressor in view at all: there the pressure stands alone as plain hardship, and it is the very thing that opens a person's ear.