Copper and bronze in shot extremely cold (7)
I believe the answer is:
distant
'cold' is the definition.
(similar in meaning)
'copper and bronze in shot extremely' is the wordplay.
'copper' becomes 'di' (detective inspector, type of copper).
'and' says to put letters next to each other.
'bronze' becomes 'tan' (both can mean to get a sun tan).
'in' indicates putting letters inside.
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'shot' with its centre taken out is 'st'.
'tan' placed within 'st' is 'stant'.
'di'+'stant'='DISTANT'
(Other definitions for distant that I've seen before include "Absent - coming from a far-away place" , "Unfriendly; far off" , "cool" , "overseas?" , "Far from - reserved" .)