Obstinate - (Webster's 1828 Dictionary)
OB'STINATE, a. [L. obstinatus.]
1. Stubborn; pertinaciously adhering to an opinion or purpose; fixed firmly in resolution; not yielding to reason, arguments or other means.
I have known great cures done by obstinate resolutions of drinking no wine.
No ass so meek, no ass os obstinate.
2. Not yielding or not easily subdued or removed; as an obstinate fever; obstinate obstructions; an obstinate cough.