Crossword Genius

Sadly studio source showing bad manners (12)

Ross

I believe the answer is:

discourteous

'showing bad manners' is the definition.
(discourteous means impolite or disrespectful)

'sadly studio source' is the wordplay.
'sadly' indicates anagramming the letters.
'studio'+'source'='studiosource'
'studiosource' with letters rearranged gives 'DISCOURTEOUS'.

(Other definitions for discourteous that I've seen before include "Uncouth" , "Rude, inconsiderate" , "Ill-mannered" , "Impolite" .)

I've seen this clue in The Times.
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