Translation

恐怖を感じている / 怯えている / ぞっとしている

Meaning

Feeling extreme fear or being scared to a very high degree. It is much stronger than just being 'scared'.

Examples

• She was terrified of spiders and would scream if she saw one.
  She was terrified of spiders and would scream if she saw one.
• The hikers were terrified when they realized they were lost in the dense forest.
  The hikers were terrified when they realized they were lost in the dense forest.