Effrontery bowlers show officers (5,4)

I believe the answer is:

brass hats

'officers' is the definition.
(brass hat is a kind of officer)

'effrontery bowlers' is the wordplay.
'effrontery' becomes 'brass' (synonyms).
'bowlers' becomes 'hats' (I've seen this in another clue).
'brass'+'hats'='BRASS HATS'

'show' is the link.

I've seen this clue in the Sydney Morning Herald.

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