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.