terrifying, horrifying, scary, paralyzing, alarming,apalling... The synonym you should use depends on the context.
terrorized
Afraid. Frightened.
Horror, scared, terrified ?
Yes, frightened is a three syllable word.
Afraid, terrified, horrified, alarmed, frightened, petrified.
The fact that he had to go in that dark room alone, made he girl frightened. This is the correct use of the word frightened.
She had never been so frightened before.Mummy, James frightened me again.
"are" is the verb. "they are" comes from the verb "to be". "frightened" is the adjective.
The dog was frightened by the noise. - then
Frightened is only capitalised if it begins a sentence, or is part of a title.
frightened
frightened
scared, frightened