Having the power of driving or impelling; giving an impulse; moving; impellent.
- Inclined to act on impulse rather than thought.
- Motivated by or resulting from impulse: such impulsive acts as hugging strangers; impulsive generosity. See Synonyms at spontaneous.
- Having force or power to impel or incite; forceful.
- Physics Acting within brief time intervals. Used especially of a force.