Sailor not dancing but twisting (9)
I believe the answer is:
torsional
'twisting' is the definition.
(thesaurus)
'sailor not dancing' is the wordplay.
'dancing' indicates anagramming the letters.
'sailor'+'not'='sailornot'
'sailornot' anagrammed gives 'TORSIONAL'.
'but' acts as a link.
(Other definitions for torsional that I've seen before include "with a twist" , "Relating to twisting" .)