Crossword Genius

Surely sad? Sad, surely (9)

Ross

I believe the answer is:

assuredly

'surely' is the definition.
(thesaurus)

'surely sad? sad' is the wordplay.
'sad' indicates anagramming the letters.
'surely'+'sad'='surelysad'
'surelysad' with letters rearranged gives 'ASSUREDLY'.

I've seen this clue in The Everyman puzzle in The Observer.
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