Crossword Genius

Careless, extremely rude young lady (6)

Ross

I believe the answer is:

remiss

'careless' is the definition.
(thesaurus)

'extremely rude young lady' is the wordplay.
'extremely' says to hollow out the word (remove centre letters).
'young lady' becomes 'miss' ('miss' can be a synonym of 'young lady'**).
'rude' with its centre taken out is 're'.
're'+'miss'='REMISS'

(Other definitions for remiss that I've seen before include "Negligent like misers" , "Negligent, derelict" , "Wrong" , "Neglectful" , "Careless and inattentive" .)

I've seen this clue in The Telegraph.
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