start, jerk, jolt, convulsion, spasm, jump, wince, bounce, twitch, shock, shake, jar, lurch, shudder, quiver, swerve, movement, sudden movement, involuntary movement, convulsive movement, trembling, tremor, vibration, quake, tremble, bump, shiver, jounce, kick, jog, thrust, quaver, quivering, flutter, palpitation, thrill, judder, agitation, rock, shuddering, frisson, throw, shock wave, flop, joggle, shot, abrupt movement, tingle, rumble, jiggle … more

shudder, recoil, shrinking, wince, start, cringe, flinch, jump, grimace, gasp, shake, quiver, retreat, hesitation, dread, fear, anxiety, alarm, trepidation, apprehension, worry, disquiet, panic, disquietude, uneasiness, terror, unease, horror, fright, fearfulness, apprehensiveness, consternation, concern, misgiving, angst, foreboding, dismay, alarum, scare, awe, jitters, worriment, funk, creeps, trepidity, trembling, shuddering, affright, aversion, phobia … more

shudders, recoils, shrinkings, winces, starts, cringes, flinches, jumps, quivers, gasps, grimaces, shakes, retreats, hesitation, dreads, fear, anxiety, alarm, trepidation, apprehensions, worry, disquiet, panics, disquietude, uneasiness, terror, unease, horror, fright, fearfulness, apprehensiveness, consternation, concern, misgivings, angst, forebodings, dismay, alarums, scares, awe, worriments, trepidity, tremblings, shudderings, affrights, aversion, phobias, heebie-jeebies, stage fright … more