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Noun: spook  spook
  1. Someone unpleasantly strange or eccentric
    - creep, weirdo, weirdie, weirdy
  2. A mental representation of some haunting experience
    "he looked like he had seen a spook";
    - ghost, shade, wraith, specter [US], spectre [Brit, Cdn]
  3. A person secretly employed in espionage for a government
    - secret agent, intelligence officer, intelligence agent, operative, spy
Verb: spook  spook
  1. Frighten or scare, and often provoke into a violent action
    "The noise spooked the horse"

Derived forms: spooked, spooks, spooking

Type of: affright, agent, apparition, disagreeable person, fantasm, fright [archaic], frighten, phantasm, phantasma, phantom, scare, shadow, unpleasant person

Encyclopedia: Spook