impulsive

1. proceeding from natural feeling or impulse without external stimulus

- an impulsive gesture of affection

2. without forethought

- letting him borrow her car was an impulsive act that she immediately regretted

Similar word(s): unpremeditated

3. having the power of driving or impelling

- an impulsive force

4. determined by chance or impulse or whim rather than by necessity or reason

5. characterized by undue haste and lack of thought or deliberation

- liable to such impulsive acts as hugging strangers

1. That which impels or gives an impulse; an impelling agent.

2. One whose behaviour or personality is characterized by being impulsive.

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