σείω

to rock (vibrate, properly, sideways or to and fro), i.e. (generally) to agitate (in any direction; cause to tremble); figuratively, to throw into a tremor (of fear or concern)

to rock (vibrate, properly, sideways or to and fro), i.e. (generally) to agitate (in any direction; cause to tremble); figuratively, to throw into a tremor (of fear or concern)