Synonyms and related words :
arrogance, assurance, assuredness, audacity, backbone, balls, belief, boldness, bottle, bottom, bravery, certitude, cocksureness, confidence, confidentness, conviction, daring, dauntlessness, determination, doughtiness, faith, fearlessness, firmness, fortitude, gallantry, gameness, grit, guts, heart, heroism, hubris, intrepidity, mettle, mettlesomeness, moxie, nerve, overconfidence, oversureness, overweening, overweeningness, persistence, pith, pluck, pluckiness, poise, pomposity, positiveness, pride, resolution, sand, security, self-assurance, self-confidence, self-importance, self-reliance, settled belief, spirit, spunk, spunkiness, stamina, subjective certainty, sureness, surety, tenacity, toughness, true grit, trust, valor,