Dancing sailor not twisting (9)

I believe the answer is:

torsional

'twisting' is the definition.
(thesaurus)

'dancing sailor not' is the wordplay.
'dancing' is an anagram indicator.
'sailor'+'not'='sailornot'
'sailornot' is an anagram of 'TORSIONAL'.

(Other definitions for torsional that I've seen before include "Relating to twisting" , "with a twist" .)

I've seen this clue in The Times.

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