Some disapproval at insolent language (5)
I believe the answer is:
latin
'language' is the definition.
(I know that Latin is a type of Italic language)
'some disapproval at insolent' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'LATIN' is hidden in the letters of 'disapproval at insolent'.
(Other definitions for latin that I've seen before include "Learning it 'an honour' (Churchill)" , "Language of the Caesars" , "a quarter of Parisians" , "Old Roman language" , "Virgil's tongue" .)