Spook

"The building was haunted by a couple of spooks."

"The big spider gave me a spook."

"He who is infatuated with Man leaves persons out of account so far as that infatuation extends, and floats in an ideal, sacred interest. Man, you see, is not a person, but an ideal, a spook. — Max Stirner"

"The hunters were spooked when the black cat crossed their path. The movement in the bushes spooked the deer and they ran."

"The deer spooked at the sound of the dogs."