un·daunt·ed (ŭn-dôn'tĭd, -dän'-) adj. Not discouraged or disheartened; resolutely courageous. See Synonyms at brave. un·daunt'ed·ly adv., un·daunt'ed·ness n.
1442, with ref. to horses, "untamed, not broken in," from un- (1) "not" + pp. of daunt (v.). In ref. to persons, meaning "intrepid" is recorded from 1587.