Some seismic activity (7)
I believe the answer is:
tremors
(Other definitions for tremors that I've seen before include "The shakes" , "Quivers" , "Err most (anag.)" , "Quakings" , "Vibrations" .)
I believe the answer is:
tremors
(Other definitions for tremors that I've seen before include "The shakes" , "Quivers" , "Err most (anag.)" , "Quakings" , "Vibrations" .)