Some miner I'd antagonised around the pits (5)
I believe the answer is:
nadir
'the pits' is the definition.
(I've seen this in another clue)
'some miner i'd antagonised around' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'around' says the letters should be written backwards.
'ridan' is hidden within 'miner id antagonised'.
'ridan' in reverse letter order is 'NADIR'.
(Other definitions for nadir that I've seen before include "Low-water mark" , "deep despair" , "It's the depths" , "All-time low" , "Rock bottom" .)