An obscure impulse like a memory of his former days with Atiaran prompted him to drop away from Elena's side and ride behind her.

A situation where our emotional impulses might prompt us to take some sort of action that could have serious repercussions.

As she passed him a sudden impulse prompted Ogden Secor to stop her.

What crazy impulse had prompted him to ask her out the night before?

You may tell me that a mere natural impulse prompted you to do what you did.

What impulse prompted him to rise and carry his tray to their table, Kirk could not fathom.

Feral impulse prompted Kit in the disposition of his shots.

A hateful little impulse prompted her to say, "How about tomorrow?

An overpowering impulse prompted her to keep her beloved secret to herself.

Even though what I did was done in jest, what hideous impulse could have prompted me to do such a thing!