Drama not performed haphazardly (2,6)
I believe the answer is:
at random
'haphazardly' is the definition.
(I know that haphazardly can be written as at random)
'drama not performed' is the wordplay.
'performed' indicates anagramming the letters.
'drama'+'not'='dramanot'
'dramanot' with letters rearranged gives 'AT RANDOM'.
(Other definitions for at random that I've seen before include "Haphazard" , "without purpose" , "In no prearranged order" , "Haphazardly" , "willy-nilly" .)