impulsive

/ɪmˈpʌlsɪv/
adjective
  1. Acting suddenly without thinking about the consequences.
    • Children can be impulsive, grabbing things without asking first.
    • His impulsive purchase of a new car left him with no savings.
    • She made an impulsive decision to quit her job and travel the world.
What does "impulsive" mean? | whatsthatwordmean | whatsthatwordmean