gallus

/ˈɡæləs/
adjective
  1. Bold, daring, or cheeky; showing a confident and sometimes reckless attitude.
    • He's a gallus lad who will try anything once, no matter the risk.
    • Her gallus behavior at the meeting surprised everyone, but it got results.
    • The gallus young apprentice talked back to the master without fear.
Antonyms