Walked worriedly (5)
I believe the answer is:
paced
'walked worriedly' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for paced that I've seen before include "Moved steadily" , "assist an athlete" , "Measured (a distance) in steps" , "set the tempo" , "Made anxious moves" .)