Firmly or stubbornly adhering to one’s purpose, opinion, etc.; not yielding to argument, persuasion, or entreaty. (Dictionary.com)
Characterised by inflexible persistence or an unyielding attitude; inflexibly persisted in or carried out. (Dictionary.com)
Not easily controlled or overcome: (Dictionary.com)
Unreasonably determined, especially to act in a particular way and not to change at all, despite what anyone else says. (Cambridge Dictionary)
Stubbornly adhering to an opinion, purpose, or course in spite of reason, arguments, or persuasion. (Merriam – Webster)
Obstinate stock photos.
Turkey will not ‘get obstinate’ with markets, Şimşek says.