spooky | en

spook⋅y
/ˈspuki/ [spoo-kee]
(–adjective, spook⋅i⋅er, spook⋅i⋅est. Informal.)
1. like or befitting a spook or ghost; suggestive of spooks.
2. eerie; scary.
3. (esp. of horses) nervous; skittish. .