• Noun
  • a sudden strong desire to do something
    1. He has to learn to control his impulses.
    2. a natural/creative/sudden impulse
    3. a generous impulse
    4. He had to resist the impulse [=urge] to shout.
    5. My first/initial impulse was to say no.
    6. He bought a new camera on impulse.
    7. She quit her job on a sudden impulse.
    8. The camera was an impulse buy.
    9. Shopping with a credit card can lead to impulse buying.
  • a small amount of energy that moves from one area to another
    1. an electrical impulse
    2. a nerve impulse [=a wave of electrical energy that is carried through the nerves to the brain]