Powerless to choose one's course? (6)
I believe the answer is:
adrift
'course?' is the definition.
Both the definition and answer are adverbs. Perhaps they are linked in a way I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for adrift that I've seen before include "'Directionless, floating freely (6)'" , "Undirected" , "Not anchored, floating freely" , "Floating uncontrolled" , "Wandering aimlessly" .)