In no particular order (2,6)
I believe the answer is:
at random
'in no particular order' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for at random that I've seen before include "Casually" , "In no prearranged order" , "willy-nilly" , "unplanned" , "Haphazardly" .)