spooky adjective eerie, frightening, chilling, ghostly, weird, mysterious, scary (informal), unearthly, supernatural, uncanny, creepy (informal), spine-chilling The whole place had a slightly spooky atmosphere.
Spooky things make a shiver go down your spine—they're scary or creepy. A movie's spooky music might be enough to make you cover your eyes in fear. This informal adjective is perfect for talking about things that make you feel afraid or deeply uneasy.