Obstinate doctor fainted (7)

I believe the answer is:

defiant

'obstinate' is the definition.
(thesaurus)

'doctor fainted' is the wordplay.
'doctor' is an anagram indicator.
'fainted' anagrammed gives 'DEFIANT'.

(Other definitions for defiant that I've seen before include "Insolently bold" , "Uncooperative" , "Openly resisting" , "Boldly resistant -- fainted (anag)" , "Insubordinate" .)

I've seen this clue in The Times and The Sun.

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