to be stubborn: to dig in and refuse to submit to a rightful authority
This is the Bible's word for a settled, willful refusal to be led. It almost always shows up as a description of someone's character ("a stubborn son," "a rebellious people," "defiant rulers"), not a single act, and it is aimed above all at those who will not obey God. The picture underneath the word is physical: a draft animal that turns its shoulder out from under the yoke and will not be guided. That image surfaces openly in the "stubborn heifer" of Hosea and in the idiom of the "stubborn shoulder," and it colors every use, whether the stubborn one is a child, a nation, or a corrupt official.
Scholars trace the word to a root meaning "turn aside," and that root shows through the word wherever it appears: to be stubborn is to have curved off course, away from the one who has the right to lead you. So the word is less about a private mood than about a direction: a heart, a shoulder, or a whole life that has pulled away from its master.
The applications fan out but the core never changes. The one accusation runs from the incorrigible child of the household law, to the covenant people as a whole, to their scheming leaders, to hostile nations who defy God's reign. Wherever it lands, the charge is the same: an entrenched, culpable refusal to submit.
The word travels almost always with a companion word for defiance, מָרָה, in the fixed pair "stubborn and rebellious." Where a related verb, מָרַד, pictures active revolt and uprising, this word pictures the ingrained attitude behind it: the disposition to dig in rather than the act of rising up.