1. (v. i.) To tremble or shake with fear, horror, or aversion; to shiver with cold; to quake.

2. (n.) The act of shuddering, as with fear.

bang be cold bob bobble boot bounce bump charge chatter chill convulse convulsion didder disquiet disquietude dither dithers falter fidgetiness fidgets flush flutter freeze freeze to death grimace grow cold gyrate have a chill have an ague have goose pimples heaving horripilate hustle inquietude jactitate jar jerk jig jigget jiggle jog joggle jollies jolt jostle jounce jump kick lift lose heat palpitation panting paroxysm perish with cold pitapat pitter-patter quake quaking quaver quavering quiver quivering rattle restlessness rictus rush rush of emotion sensation shake shakes shaking shimmy shiver shivers shock spasm surge of emotion thrill throb throbbing tic tingle tingling titillation tremble trembling tremor tremor of excitement trepidation trepidity twitch twitter unrest vibrate vibration wobble