Character evident in this or that (4)
I believe the answer is:
sort
'character' is the definition.
(I've seen this in another clue)
'in this or that' is the wordplay.
'in' says the answer is hidden in the clue.
'SORT' is hidden in the letters of 'this or that'.
'evident' is the link.
(Other definitions for sort that I've seen before include "Put in order" , "Work out" , "Shuffle into desired sequence" , "Type, category" , "choice of characters frequently used in statistics" .)