Opposite of dynamic (6)
I believe the answer is:
static
'opposite of dynamic' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for static that I've seen before include "Steady" , "Lacking change" , "Inactive or inert" , "Inert or passive, like some electricity" , "8-ing - sort of electricity, line or memory" .)