Beharren
Beharren is a German verb that translates to "to insist," "to persist," or "to remain." It generally implies a strong, often stubborn, adherence to a particular opinion, course of action, or state. The word carries a connotation of not yielding easily to opposition or persuasion.
In common usage, beharren can describe a person who stubbornly holds onto their viewpoint despite evidence
The verb is derived from the Middle High German "beharren," which has similar meanings of sticking to