The Collaborative International Dictionary of English v.0.48:

Alarmed \A*larmed"\, a.
   Aroused to vigilance; excited by fear of approaching danger;
   agitated; disturbed; as, an alarmed neighborhood; an alarmed
   modesty.
   [1913 Webster]

         The white pavilions rose and fell
         On the alarmed air.                      --Longfellow.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Alarm \A*larm"\, v. t. [imp. & p. p. Alarmed; p. pr. & vb. n.
   Alarming.] [Alarm, n. Cf. F. alarmer.]
   1. To call to arms for defense; to give notice to (any one)
      of approaching danger; to rouse to vigilance and action;
      to put on the alert.
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   2. To keep in excitement; to disturb.
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   3. To surprise with apprehension of danger; to fill with
      anxiety in regard to threatening evil; to excite with
      sudden fear.
      [1913 Webster]

            Alarmed by rumors of military preparation.
                                                  --Macaulay.
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WordNet (r) 3.0 (2006):

alarmed
    adj 1: experiencing a sudden sense of danger