ballsier
/ˈbɔːlzi/
adjective
Determined and courageous.
brave,fearless,courageous,valorous,plucky,intrepid,heroic,stout-hearted,lionhearted,manly,manful,bold,daring,audacious,gallant,confident,spirited,stout,undaunted,dauntless,doughty,mettlesome,unalarmed,unflinching,unshrinking,unblenching,unabashed,undismayed