Cad mainly going out full of energy (9)

I believe the answer is:

dynamical

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'cad mainly going out full of energy' is the definition.
I can't judge whether this definition defines the answer.

'cad mainly going out' is the wordplay.
'going out' indicates an anagram (out can mean wrong or inaccurate).
'cad'+'mainly'='cadmainly'
'cadmainly' anagrammed gives 'DYNAMICAL'.

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I've seen this clue in The Guardian.

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