| agitating(verb, trembling, shaking, agitating, vibrating) |
| fluttering(verb, unsteady, trembling) |
| fright(noun, fear, apprehension, terror, convulsion) |
| jittery(adjective, weak, unstable, unsettled, agitated) |
| jumpy(adjective, agitated, unsteady, trembling, shaking) |
| nervous(adjective, weak, unstable, unsettled, agitated) |
| shiver(noun, agitation, fear, shake, tremble) |
| shudder(noun, shake, tremble, vibration) |
| spasm(noun, fit, seizure, tremor) |
| trembly |
| trepidation(noun, agitation, fear, shake, tremble) |
| twitching(verb, adjective, agitated, agitating) |
| vibration(noun, agitation, shake, tremble, upheaval) |
| wobbly(adjective, weak, unstable, unsettled, shaky) |
| agitation(noun, fit, shake, tremble, seizure) |
| alarm(noun, fear, terror) |
| cold sweat(noun, expression, fear, terror, shiver) |
| commotion(noun, fit, seizure, tremor, spasm) |
| consternation(noun, fear, terror) |
| dismay(noun, fear, terror) |