As a noun terms
is .
As an adjective spookiest is
(spooky).
terms
English
Noun
(head)
Statistics
*
----
spookiest
English
Adjective
(head)
(spooky)
spooky
English
Adjective
(er)
eerie, or suggestive of ghosts or the supernatural
unpredictably excitable; skittish (used especially of horses)
Derived terms
* spookily