WordNet (r) 3.0 (2006):

panicked
    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]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "panicked":
   all up with, beat, beaten, bested, confounded, defeated,
   discomfited, done for, done in, down, fallen, fixed, floored,
   hors de combat, in a panic, lambasted, lathered, licked,
   on the skids, outdone, overborne, overcome, overmastered,
   overmatched, overpowered, overridden, overthrown, overturned,
   overwhelmed, panic-prone, panic-stricken, panic-struck, panicky,
   put to rout, routed, ruined, scattered, settled, silenced, skinned,
   skinned alive, stampeded, trimmed, trounced, undone, upset,
   whelmed, whipped, worsted