speed demon

• Personne qui conduit, se déplace ou agit très vite, souvent de manière imprudente ou avec un grand enthousiasme pour la vitesse.

A person who drives, moves, or acts very fast, often recklessly or with great enthusiasm for speed.

1. Fast driverB2informalamerican

   A person who drives very fast, often recklessly.

   chauffard

   • My brother is a real speed demon on the highway.
   • The police pulled over the speed demon for going 100 mph.
   • She's a speed demon, always arriving in record time.

2. Fast performerB2informalamerican

   A person who does things very quickly, especially in sports or work.

   boule d'énergie

   • He's a speed demon on the basketball court.
   • The new intern is a speed demon when it comes to data entry.
   • She's a speed demon at solving puzzles.