Word forms: spooks
1. countable noun
A spook is a ghost. [informal]
2. countable noun
A spook is a spy. [US, informal] ⇒ ...as a U.S. intelligence spook said yesterday.
3. verb If people are spooked, something has scared them or made them nervous. [mainly US] [V n] ⇒ But was it the wind that spooked her? [be V-ed] ⇒ Investors were spooked by slowing economies. spooked
graded adjective & adjective [v-link ADJ] ⇒ He was so spooked that he, too, began to believe that he heard strange clicks and noises on their telephones.
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