Example: 
'Make sure you <em>mind your manners</em> when your grandparents come. They'll be happy if you're polite.'
Photo license: 
CC: Attribution, Commercial Use
Regionalism: 
Neutral
Regional variant: 
Neutral
Full Expression: 
Etiquette: mind your manners
French
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No
Spanish
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No
German
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No
Portuguese
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No

an expression used to remind people - especially children - to act properly in front of other people.

Chinese
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No
Italian
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No
Alsatian
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No