Answer: spookier

AnswerCrossword Clue
SPOOKIERMore chilling
SPOOKIERMore hair-raising
SPOOKIERMore uncanny.
SPOOKIERMore weird
SPOOKIERMore eerie
SPOOKIERTwice as frightful
spookier(of a person or animal) Easily frightened; nervous
spookierSPOOKY, scary (frightening, also SCAREY)
spookierSinister or ghostly in a way that causes fear and unease