זוּעַ zûwaʻ (H2111)

properly, to shake off, i.e. (figuratively) to agitate (as with fear)

1) to tremble, quiver, quake, be in terror 1a) (Qal) to tremble, quake 1b) (Pilpel) 1b1) to shake violently 1b2) to cause to tremble

a primitive root;