Oscillated (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
swung
'oscillated' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for swung that I've seen before include "Moved back and forth" , "Influence decisively - moved in an arc" , "Oscillated" , "Hung freely" .)