1. 
[syn: panicky, panicked, panic-stricken, panic-struck, terrified, frightened]
The Collaborative International Dictionary of English v.0.48:
Panic-stricken \Pan"ic-strick`en\, Panic-struck
\Pan"ic-struck`\, a.
   Struck with a panic, or sudden fear; thrown into a state of
   intense fear; as, trying to keep back the panic-stricken
   crowd. --Burke.
   Syn: panicky, petrified, terrified, frightened.
        [1913 Webster] Paniculate
WordNet (r) 3.0 (2006):
panic-struck
    adj 1: thrown into a state of intense fear or desperation;
           "became panicky as the snow deepened"; "felt panicked
           before each exam"; "trying to keep back the panic-
           stricken crowd"; "the terrified horse bolted" [syn:
           panicky, panicked, panic-stricken, panic-struck,
           terrified, frightened]