intrepidness

adventuresomeness adventurousness audacity backbone braveness bravery bravura courageousness daring dash dauntlessness determination doughtiness endurance enterprise fearlessness firmness fortitude gallantry gameness grit guts hardihood heart heroism intrepidity lion-heartedness mettle nerve pluck pluckiness power prowess pugnacity rashness recklessness resolution spirit spunk stoutheartedness temerity tenacity undauntedness valiance valiancy valiantness valor venturesomeness élan