Disturbed the pair of wild deer (8)
I believe the answer is:
bothered
'disturbed' is the definition.
(I've seen this before)
'the pair of wild deer' is the wordplay.
'the pair' becomes 'both'.
'of wild' indicates anagramming the letters (I've seen 'wild' mean this).
'deer' anagrammed gives 'ered'.
'both'+'ered'='BOTHERED'
(Other definitions for bothered that I've seen before include "The bored, strangely, can be troubled" , "Took the trouble to do something" , "''Bewitched, ... and bewildered'' (song) (8)" , "Under stress" , "Old song: 'Bewitched, . . . . . . . . and bewildered'" .)