Cut off ring amongst other details (8)
I believe the answer is:
isolated
'cut off' is the definition.
(I've seen this in another clue)
'ring amongst other details' is the wordplay.
'ring' becomes 'o' (letter resembling a ring).
'amongst' is an insertion indicator (I've seen this in other clues).
'other' indicates an anagram.
'details' with letters rearranged gives 'islated'.
'o' inserted within 'islated' is 'ISOLATED'.
(Other definitions for isolated that I've seen before include "kept separate" , "Separated from others" , "Single" , "Placed alone" , "Cut off or left behind" .)