Floating aimlessly (6)
I believe the answer is:
adrift
'floating aimlessly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for adrift that I've seen before include "Aimlessly floating" , "Unanchored - lost" , "No longer fixed in position" , "Moving aimlessly, unfastened" , "Undirected" .)