spook

IPA: spˈuk

(informal) A ghost or phantom.
A hobgoblin.
(informal) A scare or fright.
(espionage, slang) An undercover agent or spy.
(slang, dated, offensive, ethnic slur) A black person.
(philosophy) A metaphysical manifestation; an artificial distinction or construct.
(US, slang, medicine) A psychiatrist.
(blackjack, slang) A player who engages in hole carding by attempting to glimpse the dealer's hole card when the dealer checks under an ace or a 10 to see if a blackjack is present.

Examples of "spook" in Sentences

Walking through the abandoned house at night always gave me an eerie feeling, as if a spook was lurking around every corner
The sudden noise in the dark forest sent a shiver down my spine, making me wonder if it was just a harmless animal or something more sinister, like a spook
As I told ghost stories around the campfire, I couldn't help but feel a sense of unease, as if the tales were attracting spooks to our campsite
The creaking of the old staircase echoed through the empty mansion, filling the air with a sense of foreboding and spookiness
My friends liked to play pranks on me, jumping out from behind corners to spook me when I least expected it