rāgaz רָגַז ‘to tremble’ (Hebrew)

Etymology^?: a primitive root

rāgaz v
1) tremble, quake, rage, quiver, be agitated, be excited, be perturbed
 1a)(Qal) to quake, be disquieted, be excited, be perturbed
 1b) (Hiphil) to cause to quake, disquiet, enrage, disturb
 1c) (Hithpael) to excite oneself