1. Firmly adhering to one's own purpose or opinion, even when wrong; not yielding to argument, persuasion, or entreaty. SYN: intractable (2), refractory (2). 2. SYN: refractory (1). [L. obstinatus, determined]
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ob·sti·nate 'äb-stə-nət adj
1) adhering to an opinion, purpose, or course in spite of reason, arguments, or persuasion
2) not easily subdued, remedied, or removed <\obstinate fever>
Medical dictionary. 2011.