Crossword Genius

Insulting doctor or aged Conservative (10)

Ross

I believe the answer is:

derogatory

'insulting' is the definition.
(thesaurus)

'doctor or aged conservative' is the wordplay.
'doctor' indicates anagramming the letters.
'conservative' becomes 'tory' (I've seen this before).
'or'+'aged'='oraged'
'oraged' anagrammed gives 'deroga'.
'deroga'+'tory'='DEROGATORY'

(Other definitions for derogatory that I've seen before include "Insulting" , "Disparaging" , "Showing a disrespectful attitude" , "deliberately offensive" .)

I've seen this clue in The Telegraph.
Want a hint initially instead of a full solution? Install my app