1. That which impels or gives an impulse; an impelling agent.
  2. One whose behaviour or personality is characterized by being impulsive.


  1. Having the power of driving or impelling; giving an impulse; moving; impellent.
  2. Actuated by impulse or by transient feelings; inclined to make rapid decisions without due consideration.
  3. Acting momentarily, or by impulse; not continuous – said of forces.

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