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Change sempstresss work, wasting energy (5)

Ross

I believe the answer is:

swing

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This might be a double definition.

'change sempstresss' is the first definition.
'swing' can be an answer for 'change' (thesaurus). I'm not sure about the 'sempstresss' bit.

'work wasting energy' is the second definition.
'swing' can be an answer for 'work' (thesaurus). I am unsure of the 'wasting energy' bit.

Can you help me to learn more?

(Other definitions for swing that I've seen before include "Hanging seat, jazz style" , "Music; hanging seat" , "coming and going" , "Type of music" , "Big band jazz" .)

I've seen this clue in The Daily Mail.
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