the world > existence and causation > existence > state or condition > tendency > [noun] > impulse or instinct (3)
Innate impulse; natural or spontaneous tendency or inclination. Formerly applicable to the natural tendencies of inanimate things. In modern use…
Sudden or involuntary inclination or tendency to act, without premeditation or reflection.
With reference to people: a natural or innate instinct, tendency, or impulse. Now more generally: a preference, an inclination.