Definitions
1.AdjectiveHaving the power of driving or impelling; giving an impulse; moving; impellent.
2.AdjectiveActuated by impulse or by transient feelings; inclined to make rapid decisions without due consideration.
3.AdjectiveActing momentarily, or by impulse; not continuous – said of forces.
4.NounThat which impels or gives an impulse; an impelling agent.
5.NounOne whose behaviour or personality is characterized by being impulsive.