It's not moving yet (5)
I believe the answer is:
still
This clue is a double definition.
'it's not moving' is the first definition.
('still' is the opposite to 'moving')
'yet' is the second definition.
(I know that yet can be written as still)
(Other definitions for still that I've seen before include "Motionless - nevertheless" , "Yet; not moving" , "Tranquil" , "Where to make spirits" , "Undisturbed < , yet" .)