tenacity, ferocity, fearlessness, doggedness, aggressiveness, toughness, ferociousness, tenaciousness, physicality, fierceness, ruthlessness, work ethic, scrappiness, unselfishness, tirelessness, persistence, viciousness, perseverance, fortitude, bullheadedness, indomitability, athleticism, pugnacity, boldness, stubbornness, forcefulness, steeliness, gutsiness, elusiveness, intensity, irrepressibility, physicalness, orneriness, prowess, implacability, inventiveness, grit, quickness, steadiness, feistiness, moxie, zeal, decisiveness, brilliance, brashness, hustle, explosiveness, poise, cleverness, virtuosity, voraciousness, irascibility, courageousness, egomania, diligence, audaciousness, vigor, determination, bravado, guile, gameness, craftiness, artfulness, wiliness, bloodthirstiness, eloquence, smarts, flashiness, meanness, perseverence, malevolence, quotability, verve, impishness, unconventionality, artistry, courage, unflappability, unorthodoxy, staunchness, nastiness, canniness, timidity, resourcefulness, obsessiveness, persuasiveness, imperiousness, swiftness, imperturbability, stoicism, arrogance, voracity, finesse, stoutness, passion, incisiveness, resiliency, hubris, intimidator, mastery, grittiness, selflessness, resoluteness, sternness, desperation, grimness, persistency, abruptness, earnestness, intentness, mockery, positiveness, derision, harshness, inflexibility

mercilessness, unmercifulness

inexorability, inexorableness