1) Afraid 2) Anxious 3) ASSERTED WITHOUT PROOF 4) Difficult to steal 5) Dismayed 6) Disturbed 7) Far from calm 8) Fear-stricken 9) Filled with fear 10) Freaked out 11) Frightened 12) Having a fright 13) Highly concerned 14) In a panic 15) Like many an emergency door 16) More than concerned 17) More than worried 1) Afraid 2) Frightened 3) Scared 4) Worried 
Eel River, as seen while driving on the Avenue of the Giants, California. ...
• (imp. & p. p.) of Alarm • (a.) Aroused to vigilance; excited by fear of approaching danger; agitated; disturbed; as, an alarmed neighborhood; an alarmed modesty.
A·larmed' adjective Aroused to vigilance; excited by fear of approaching danger; agitated; disturbed; as, an alarmed neighborhood; an alarmed modesty. « The white pavilions rose and fell On the alarmed air. Longfellow. » 
[adj] - experiencing a sudden sense of danger
adjective experiencing a sudden sense of danger