Sho' (also shaw) denotes sudden devastation, ruin, or desolation — the kind of catastrophic destruction that comes without warning. Appearing about 13 times, it often describes the sudden onset of calamity. Related to this root is shav (vanity/emptiness), used in the third commandment ("not take the name of the LORD in vain") — pointing to the destructive emptiness of profaning what is holy.
Sho' in the prophetic literature depicts the judgment that falls on those who trust in false securities — Babylon's sudden fall (Isaiah 47:11), the destruction of the wicked (Job 30:3), the collapse of those who reject God. Psalm 35:8 prays that disaster (sho') would fall upon the enemy unawares — echoing the pattern where unjust destroyers are themselves destroyed. The theological message: apart from God, all human strength is vulnerable to sudden sho'. Only the LORD is an indestructible refuge.