WordWeb Online

1. Thrown into a state of intense fear or desperation
   "felt panicked before each exam"
   - panicky, panic-stricken, panic-struck, terrified, frightened

1. Be overcome by a sudden fear
   "The students panicked when told that final exams were less than a week away"
    
2. Cause sudden fear in or fill with sudden panic
   "The mere thought of an isolation cell panicked the prisoners"

See also: afraid, 'fraid [non-standard]

Type of: dread, fear, terrify, terrorise [Brit], terrorize

Encyclopedia: Panic