jolt

Concise Oxford English Dictionary © 2008 Oxford University Press:
jolt /dʒəʊlt, dʒɒlt/

▶verb

• 1 move or push abruptly and roughly.

• 2 shock (someone) in order to make them act or change.

▶noun

• 1 an act of jolting.

• 2 a surprise.

– derivatives
jolty adjective.

– origin C16: of unknown origin.