Doctor is nude, not even wearing these (6)

Ross

I believe the answer is:

undies

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'not even wearing these' is the definition.
The definition suggests an adverb but the answer is not.

'doctor is nude' is the wordplay.
'doctor' is an anagram indicator.
'is'+'nude'='isnude'
'isnude' anagrammed gives 'UNDIES'.

Can you help me to learn more?

(Other definitions for undies that I've seen before include "Pants" , "linen" , "Lingerie -- is nude (anag)" , "Knickers (abbrev.)" , "Personal attire" .)

I've seen this clue in The Irish Times.

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