spook
//spuːk//
Noun
spookSingular
spooksPlural
1
A ghost or supernatural apparition.
The children were scared by a spook in the old house.
2
An informal term for a spy or secret agent.
He worked as a spook for the government during the Cold War.
Verb
spookInfinitive
spookPresent tense
spookedPast tense
spookedPast participle
spookingPresent participle
spooksThird-person singular
1
To frighten or startle someone or an animal.
The loud noise spooked the horse.
2
To become frightened or nervous.
The horse spooked at the loud noise.