It can precede or follow tac (3)
I believe the answer is:
tic
(Other definitions for tic that I've seen before include "Convulsive twitch (of face)" , "Involuntary muscle movement" , "Nervous spasm" , "jerk" , "Convulsive spasm" .)
I believe the answer is:
tic
(Other definitions for tic that I've seen before include "Convulsive twitch (of face)" , "Involuntary muscle movement" , "Nervous spasm" , "jerk" , "Convulsive spasm" .)