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mum's the word in French

mum's the word in French is motus et bouche cousue.

mum's the word in French

motus et bouche cousue
phrase
(idiomatic) Indicates that something is a secret and not to be divulged.
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What is "mum's the word" in French?

"mum's the word" in French is motus et bouche cousue.

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Translations from WikDict, CC BY-SA · example sentences from Tatoeba, CC BY 2.0 FR.