Be honest with fun bazaar (4,4)

I believe the answer is:

play fair

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'be honest' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'with fun bazaar' is the wordplay.
'with' is a charade indicator (letters next to each other).
'fun' becomes 'play' (synonyms).
'bazaar' becomes 'fair' (synonyms).
'play'+'fair' is 'PLAY FAIR'.

Can you help me to learn more?

(Other definitions for play fair that I've seen before include "Don't cheat" , "Act honestly" , "Critic's unenthusiastic review" , "Don't be unreasonable" , "Decline to cheat" .)

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

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