spooky | sense examples, Usage and Definition from wordnet dictionary online

Adjective spooky has 2 senses

eerie, eery, spooky - suggestive of the supernatural; mysterious; "an eerie feeling of deja vu"
Antonym: natural (indirect, via unnatural)
skittish, spooky, nervous - unpredictably excitable (especially of horses)
Antonym: unexcitable (indirect, via excitable)