Stop in Antipodes is terrific (6)
I believe the answer is:
desist
'stop' is the definition.
(I've seen this before)
'in antipodes is terrific' is the wordplay.
'in' indicates the answer is hidden within the clue.
'DESIST' is hidden within 'antipodes is terrific'.
(Other definitions for desist that I've seen before include "Forbear" , "Leave off (doing a thing)" , "Eject; annoyed" , "Cease (from doing something)" , "Stop, abstain" .)