1. (n.) Stubbornness; persistency; 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; contumacy.

2. (n.) The quality or state of being difficult to remedy, relieve, or subdue; as, the obstinacy of a disease or evil.

adhesiveness antagonism antipathy application assiduity assiduousness averseness aversion backwardness bad blood bloody-mindedness bulldog tenacity bullheadedness cantankerousness challenge clashing cohesiveness collision combative reaction commitment competition complaint concentration conflict consistency constancy contrariety contrariness contumaciousness contumacy counteraction cross-purposes cursoriness decidedness decision decisiveness dedication defiance defiance of authority definiteness demur determinateness determination determinedness devotion diligence disaccord disagreement disinclination disobedience dispute disrelish dissension dissent dissentience distaste dogged perseverance doggedness earnestness endurance energy engrossment enmity fidelity firmness fixedness foot-dragging force fortitude fractiousness friction frowardness fundamentalism gluiness glutinosity grudging consent grudgingness gumminess guts gutsiness hardiness hardness heartiness hostility imperviousness impliability indefatigability indisposedness indisposition indocility industriousness industry inexorability inflexibility inimicalness insistence insistency intestinal fortitude intractability intractableness intransigence lack of enthusiasm lack of zeal loyalty lustihood lustiness might mightiness mulishness mutinousness negativeness negativism nolition noncooperation obduracy obdurateness objection obstinateness obstreperousness opposition oppugnancy orneriness orthodoxy passive resistance patience patience of Job perfunctoriness permanence perseverance persistence persistency pertinaciousness pertinacity perverseness perversity pigheadedness plodding plugging potency power powerfulness precisianism preoccupation protest purism puritanism purpose purposefulness reaction rebelliousness rebuff recalcitrance recalcitrancy recalcitration refractoriness refusal relentlessness reluctance remonstrance renitence renitency repellence repellency repugnance repulse repulsion resistance resoluteness resolution resolve resolvedness restiveness retention revolt rigidity rigidness rigor rigorousness rivalry robustness ruggedness sedulity sedulousness self-will seriousness sincerity single-mindedness singleness of purpose slogging slowness snugness stability stalwartness stamina stand staying power steadfastness steadiness stick-to-itiveness stickiness sticking power stiffness stolidity stoutness strength strength of will stubbornness sturdiness sulk sulkiness sulks sullenness tackiness tenaciousness tenacity tightness tirelessness total commitment toughness unbendingness uncompromisingness uncooperativeness unenthusiasm unimpressionability uninfluenceability unmovability unpersuadability unreceptiveness unrelentingness unremittingness unresponsiveness unruliness unsuggestibility unsusceptibility unswayableness unswerving attention unwillingness unyieldingness vigor vigorousness viscidity viscosity vitality vying wildness will withstanding