Without any question in legal document (6)

I believe the answer is:

indeed

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'without any question' is the definition.
I can't judge whether this definition defines the answer.

'in legal document' is the wordplay.
'legal document' becomes 'deed' (deed is a kind of legal document).
'in'+'deed'='INDEED'

Can you help me to learn more?

(Other definitions for indeed that I've seen before include "Truthfully, really" , "Certainty" , "even" , "Expression of interest, incredulity or contempt" , "Very much so" .)

I've seen this clue in The Sun.

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