1. Marked by courage and determination in the face of difficulties or danger; robust and uninhibited
   "you have to admire her; it was a plucky thing to do";
   - gutsy, gutty [N. Amer, informal]
    
2. Showing courage
   "the champion is faced with a plucky challenger";
   - feisty, spunky [informal]

Derived forms: pluckiest, pluckier

See also: spirited

Encyclopedia: Plucky