Queen scoffed about male monarch sitting again (8)

I believe the answer is:

retaking

'sitting again' is the definition.
(taking or sitting an exam again)

'queen scoffed about male monarch' is the wordplay.
'queen' becomes 'r' (abbreviation for regina, e.g. in ER ).
'scoffed' becomes 'ate' ('to scoff' is to eat).
'about' says the letters should be written backwards.
'male monarch' becomes 'king' (synonyms).
'ate' in reverse letter order is 'eta'.
'r'+'eta'+'king'='RETAKING'

I've seen this clue in The Telegraph.

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