hothead

/ˈhɑtˌhɛd/
noun
  1. A person who gets angry very quickly or acts without thinking.
    • Don't be such a hothead — take a deep breath before you reply.
    • He's a known hothead who starts arguments over small things.
    • The coach warned the hothead to control his temper during the game.
Antonyms
What does "hothead" mean? | whatsthatwordmean | whatsthatwordmean