Scary, terrifying.
spooky
dark, eerie, isolated, frightening maybe even relaxing, calming
"Frightening" is an adjective. It is used to describe something that causes fear or terror.
What are other words to describe long Are tall and long
big words to describe excelence
horrifying, frightening, creepy, nailbiting, gut-clencher, Petrifying,
neverending, meaningless, horrifying, terrifying, frightening, devastating, overwhelming, stunning, excruciating, unfeeling, unrelenting
frightening; forbidding apex
"Frightening" is a verb form, specifically the present participle of the verb "frighten." It can also be used as an adjective to describe something that causes fear or scares people.
Some words to describe a lover are soft, gentle, and passionate. Other words that could describe a lover are rough, slow, and fiery.
very frightening
Other words for startling are alarming, astonishing, shocking, surprising, unexpected and frightening.