Obstinacy :: Obstinacy (n.) A fixedness in will, opinion, or resolution that can not be shaken at all, or only with great difficulty; firm and usually unreasonable adherence to an opinion, purpose, or system; unyielding disposition; stubborness; pertinacity; persistency; contumacy..
Obstinacy :: Obstinacy (n.) The quality or state of being difficult to remedy, relieve, or subdue; as, the obstinacy of a disease or evil..
Obstinate :: Obstinate (a.) Pertinaciously adhering to an opinion, purpose, or course; persistent; not yielding to reason, arguments, or other means; stubborn; pertinacious; -- usually implying unreasonableness..
Obstinate :: Obstinate (a.) Not yielding; not easily subdued or removed; as, obstinate fever; obstinate obstructions..