act of God adamantness application ardor assiduity assiduousness bulldog tenacity certainty commitment concentration constancy cruelty decidedness decision decisiveness dedication definiteness determinateness determination determinedness devotion diligence dogged perseverance doggedness dourness earnestness endurance energeticalness energy engrossment fate fatefulness fervor fidelity firmness flintiness force majeure fundamentalism grimness hard-bittenness hard-nosedness hardness harshness heartlessness immovability immutability implacability impliability inclemency indefatigability indefeasibility industriousness industry inelasticity ineluctability inescapableness inevasibleness inevitability inevitable accident inevitableness inexorability inexorableness inflexibility insistence insistency intransigeance intransigence intransigency intransigentism irreconcilability irrevocability laboriousness loyalty mercilessness necessity obduracy obdurateness obstinacy orthodoxy patience patience of Job permanence perseverance persistence persistency pertinaciousness pertinacity pitilessness plodding plugging precisianism predetermination preoccupation purism puritanism purpose purposefulness remorselessness resoluteness resolution resolve resolvedness rigidity rigidness rigor rigorism rigorousness ruthlessness sedulity sedulousness self-will seriousness short shrift sincerity single-mindedness singleness of purpose slogging stability stamina staying power steadfastness steadiness steeliness sternness stick-to-itiveness stiff temper stiffness strenuousness stubbornness sureness tenaciousness tenacity tender mercies tirelessness total commitment toughness unalterability unavoidable casualty unavoidableness unbendingness unchangeability uncompassionateness uncompromisingness uncontrollability undeflectability unfeelingness unforgivingness ungivingness unmercifulness unpreventability unrelentingness unremittingness unremorsefulness unsparingness unswerving attention unsympatheticness unyieldingness vehemence vis major will zealousness