derring-do
Heroic, brave, or daring deeds or spirit, especially when referring to swordplay or other action-adventure scenarios. The sailor, with great derring-do, leapt from the crow's nest of the ship with his sword in his teeth, pouncing on the pirate captain. You'll need a great deal of derring-do to fight through the enemy fortress and reach the treasure chest. Your skill with a sword won't matter if you don't have the derring-do to charge into battle.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.