JOLT

I. verb Etymology: probably blend of obsolete joll to strike and jot to bump Date: 1596 transitive verb to cause to move with a sudden jerky motion, to give a knock or blow to, 3. to disturb the composure of ; shock , to interfere with roughly, abruptly, and disconcertingly , intransitive verb to move with a sudden jerky motion, ~er noun II. noun Date: 1599 an abrupt sharp jerky blow or movement, 2. a. a sudden feeling of shock, surprise, or disappointment, an event or development causing such a feeling , a serious check or reverse , a small potent or bracing portion , ~y adjective