adjective

having or showing courage, determination, and spirit.

her gutsy 80-year-old grandmother

courageous,brave,mettlesome,plucky,bold,valiant,valorous,intrepid,heroic,lionhearted,daring,fearless,daredevil,adventurous,audacious,undaunted,unflinching,unshrinking,unafraid,dauntless,indomitable,doughty,venturesome,stout-hearted,spirited,determined,resolute,forceful,death-or-glory,rock-ribbed,spunky,game,ballsy,have-a-go,venturous