Win gold nimbly … fantastically … thrillingly (4-9)

I believe the answer is:

mind-blowingly

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'thrillingly' is the definition.
Both the answer and definition are adverbs.
Perhaps there's a link between them I don't understand?

'win gold nimbly fantastically' is the wordplay.
'fantastically' indicates anagramming the letters (a fantastical ordering of the letters).
'win'+'gold'+'nimbly'='wingoldnimbly'
'wingoldnimbly' with letters rearranged gives 'MIND-BLOWINGLY'.

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I've seen this clue in The Times.

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