pluckiest adj. 有勇气的,大胆的 (plucky的变形)
Plucky \Pluck"y\, a. [Compar. {Pluckier}; superl. {Pluckiest}.]
Having pluck or courage; characterized by pluck; displaying
pluck; courageous; spirited; as, a plucky race.
If you're plucky, and not over subject to fright.
--Barham.