jolt

(noun) a sudden jarring impact. Synonyms: jar, jounce, shock. Examples: "The door closed with a jolt." "All the jars and jolts were smoothed out by the shock absorbers."

(noun) an abrupt spasmodic movement. Synonyms: jerk, jerking, saccade.

(verb) move or cause to move with a sudden jerky motion. Synonyms: jar.

(verb) disturb (someone's) composure. Example: "The audience was jolted by the play."