derring-do
nounUK /ˌder.ɪŋˈduː/
US /ˌder.ɪŋˈduː/
Brave and daring actions that show great courage.
The knight was famous for his derring-do in battle.
OTHER MEANINGS
2. Reckless or overly bold behavior.
His derring-do nearly got him into trouble.
3. A daring or heroic deed.
The story is full of tales of derring-do.
4. Showy courage meant to impress others.
The movie is all flashy derring-do and little plot.