obstinate: Meaning and Definition of

ob•sti•nate

1. firmly or stubbornly adhering to one's purpose, opinion, etc.; not yielding to argument, persuasion, or entreaty.
2. characterized by inflexible persistence or an unyielding attitude; inflexibly persisted in or carried out: obstinate advocacy of high tariffs.
3. not easily controlled or overcome: the obstinate growth of weeds.
4. not yielding readily to treatment, as a disease.