Crossword Genius

Act frivolously and dupe a competition (4,5)

Ross

I believe the answer is:

fool about

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'competition' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'act frivolously and dupe a' is the wordplay.
'act frivolously' becomes 'bout' (bout is a kind of act. I am not sure about the 'frivolously' bit.).
'and' means one lot of letters go next to another.
'dupe' becomes 'fool' (synonyms).
'fool'+'a'='foola'
'bout' put after 'foola' is 'FOOL ABOUT'.

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I've seen this clue in The Daily Express.
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