Listless setter in nude, unusually (12)

Ross

I believe the answer is:

uninterested

'listless' is the definition.
(thesaurus)

'setter in nude unusually' is the wordplay.
'unusually' indicates anagramming the letters.
'setter'+'in'+'nude'='setterinnude'
'setterinnude' with letters rearranged gives 'UNINTERESTED'.

(Other definitions for uninterested that I've seen before include "Apathetic" , "Not concerned" , "indifferent" , "Bored" .)

I've seen this clue in The Telegraph.

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