It proves wildly frolicsome (8)

I believe the answer is:

sportive

'frolicsome' is the definition.
(I know that frolicsome can be written as sportive)

'it proves wildly' is the wordplay.
'wildly' indicates an anagram.
'it'+'proves'='itproves'
'itproves' anagrammed gives 'SPORTIVE'.

(Other definitions for sportive that I've seen before include "frisky" , "merry" .)

I've seen this clue in The Globe and Mail.

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