Crossword Genius

Misinterpretation, with and without a part (8)

Ross

I believe the answer is:

wresting

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'misinterpretation with and without a part' is the definition.
I can't judge whether this definition defines the answer.

'misinterpretation with and without a part' is the wordplay.
'misinterpretation with' becomes 'resting' (I can't justify this - if you can you should give a lot more credence to this answer).
'and' says to put letters next to each other.
'a part' says to take the initial letters.
The initial letter of 'without' is 'w'.
'resting' put after 'w' is 'WRESTING'.

Can you help me to learn more?

(Other definitions for wresting that I've seen before include "Strewing (anag.)" , "Extracting" .)

I've seen this clue in The Telegraph.
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