Deuteronomy 32:6נָבָל
Is this how you repay the LORD, O foolish and senseless people? Is He not your Father and Creator? Has He not made you and established you?
2 Samuel 3:33נָבָל
And the king sang this lament for Abner: “Should Abner die the death of a fool?
Job 30:8נָבָל
A senseless and nameless brood, they were driven off the land.
Psalm 14:1נָבָל
The fool says in his heart, “There is no God.” They are corrupt; their acts are vile. There is no one who does good.
Proverbs 17:7לְנָבָל
Eloquent words are unfit for a fool; how much worse are lying lips to a ruler!
Isaiah 32:5לְנָבָל
No longer will a fool be called noble, nor a scoundrel be respected.

Brown-Driver-Briggs

נָבָל adj. foolish, senseless, esp. of the man who has no perception of ethical and religious claims, and with collat. idea of ignoble, disgraceful; elsewh. as subst. (impious and presumptuous) fool

Sources: Brown-Driver-Briggs (1906, public domain) from the Open Scriptures Hebrew Lexicon (CC BY 4.0), glosses from STEPBible TBESH (CC BY 4.0); STEPBible TAHOT (Hebrew Bible, Leningrad Codex, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.