What word means to refuse to quit?

Answer 1

Here are some synonyms: determination, perseverance, assurance, backbone, boldness, bravery, certainty, certitude, constancy, conviction, courage, dauntlessness, decision, dedication, doggedness, dogmatism, drive, energy, fearlessness, firm-ness, fortitude, grit, guts, hardihood, heart, independence, indomitability, intrepidity, nerve, obstinacy, persistence, pluck, purpose, purposefulness, resoluteness, resolution, resolve, self-confidence, single-mindedness, spine, spunk, steadfastness, stiff upper lip, stubbornness, tenacity, valor, willpower