The Collaborative International Dictionary of English v.0.48:

Scare \Scare\, v. t. [imp. & p. p. Scared; p. pr. & vb. n.
   Scaring.] [OE. skerren, skeren, Icel. skirra to bar,
   prevent, skirrask to shun, shrink from; or fr. OE. skerre,
   adj., scared, Icel. skjarr; both perhaps akin to E. sheer to
   turn.]
   To frighten; to strike with sudden fear; to alarm.
   [1913 Webster]

         The noise of thy crossbow
         Will scare the herd, and so my shoot is lost. --Shak.
   [1913 Webster]

   To scare away, to drive away by frightening.

   To scare up, to find by search, as if by beating for game.
      [Slang]
      [1913 Webster]

   Syn: To alarm; frighten; startle; affright; terrify.
        [1913 Webster]

WordNet (r) 3.0 (2006):

scared
    adj 1: made afraid; "the frightened child cowered in the
           corner"; "too shocked and scared to move" [syn:
           frightened, scared]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "scared":
   afeared, afraid, aghast, alarmed, anxious, appalled, fear-struck,
   feared, fearful, frightened, haunted with fear, horrified,
   panicked, panicky, scary, shocked, spooked, startled, terrified,
   terror-stricken