Synonyms and related words :
afraid, aghast, alarmed, appalled, distressed, fearful, frenzied, horrified, horror-struck, hysterical, in a tizzy, jittery, jumpy, nervous, panic-struck, panicky, perturbed, petrified, scared stiff, stunned, stupefied, terrified, terror-stricken, terror-struck, unnerved, upset