Answer:

eerier

Answer	Crossword Clue
EERIER	More creepy
EERIER	More uncanny
EERIER	Weirder

EERIER	Spooky, by comparison
EERIER	More spooky
EERIER	More unearthly
EERIER	More chilling
EERIER	More macabre
EERIER	More weird
EERIER	Like "Psycho," and then some
EERIER	More spine-tingling

EERIER	Comparatively uncanny
EERIER	More frightening
EERIER	Twice as spooky
EERIER	More mysterious
EERIER	More strange
EERIER	More scary
EERIER	Less reassuring, perhaps
EERIER	More haunting

EERIER	More bizarre
EERIER	More like a "Twilight Zone" episode
EERIER	More inexplicable
EERIER	Eliciting more goose bumps
EERIER	Like a haunted house vis- -vis a fun house
EERIER	Weirder.
EERIER	More mystifying.
EERIER	Stranger.

EERIER	More weird.
EERIER	Spookier.
EERIER	More spooky.
EERIER	More ghostly.
EERIER	More frightening.
EERIER	Adjective for the "Munsters" et al.
EERIER	More uncanny.
EERIER	More hair-raising

EERIER	Stranger
EERIER	More phantasmal
EERIER	More spectral
EERIER	More eldritch
EERIER	More fantastic