Arbitrarily; haphazardly (2,6)
I believe the answer is:
at random
This clue is a double definition.
'arbitrarily' is the first definition.
(I've seen this in another clue)
'haphazardly' is the second definition.
(I know that haphazardly can be written as at random)
(Other definitions for at random that I've seen before include "In no prearranged order" , "without purpose" , "Haphazardly" , "Without method or conscious decision" , "Indiscriminately" .)