You're arguing with someone and they just refuse to give in to the truth, even though you just have this inkling that they're aware of the truth. They're just so opinionated and unyielding. I usually include the verb for stubborn in my language in this instance.(I could use the adjective, but that's the main reason for this question).
I know there isn't a verb for stubborn but is there any verb that gives a close meaning of stubborn?
the verbs insist, opinionate, stickle and other synonyms of these don't really do it for me. There has to be something out there that alludes to stubbornness.