undaunted

adjectives

unshaken in purpose
"wholly undismayed by the commercial failure of the three movies he had made"
undaunted, undismayed, unshaken
resolutely courageous
"undaunted in the face of death"
undaunted
is similar to
possessing or displaying courage; able to face and deal with danger or fear without flinching
"Familiarity with danger makes a brave man braver but less daring"- Herman Melville; "a frank courageous heart...triumphed over pain"- William Wordsworth; "set a courageous example by leading them safely into and out of enemy-held territory"
brave, courageous