A lot of possibly unproductive activity travelling between places? (5,3,6)
I believe the answer is:
toing and froing
I believe this clue is a double definition.
'a lot of possibly unproductive activity' is the first definition.
'travelling between places?' is the second definition.
(Another definition for toing and froing that I've seen is " bustling activity".)
I've seen this clue in The Telegraph.
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