Crossword Genius

Stuart OK? Been upset for old movie comedian? (6,6)

Ross

I believe the answer is:

buster keaton

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'old movie comedian?' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'stuart ok? been upset' is the wordplay.
'upset' indicates an anagram.
'stuart'+'ok'+'been'='stuartokbeen'
'stuartokbeen' with letters rearranged gives 'BUSTER KEATON'.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for buster keaton that I've seen before include "Broken statue (anag) - early film star" , "Silent screen star" , "Silent film comedy star, d. 1966" , "silent clown - with 21d" , "old movie star" .)

I've seen this clue in the Sydney Morning Herald.
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