STEP Hebrew Lexicon: רָגַז

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