Adjectives

(a)gutsy, pluckymarked by courage and determination in the face of difficulties or danger; robust and uninhibited“you have to admire her: it was a gutsy thing to do”, “the gutsy … intensity of her musical involvement” (Judith Crist), “a gutsy red wine”
(s)feisty, plucky, spunkyshowing courage“the champion is faced with a feisty challenger”