spook
verbUK /spuːk/
US /spuːk/
To spook means to make someone or something feel suddenly scared.
The loud noise spooked the horse and it ran away.
OTHER MEANINGS
2. A ghost or a scary spirit.
The kids told stories about a spook in the old house.
3. A spy or secret agent.
The movie is about a spook who works for the government.
4. To become scared suddenly.
The deer spooked when it heard a branch snap.