Etiquette
/ˈɛtəkət/
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Definition
(noun) The manners or decent behaviour to be observed in social or professional life; conventional decorum; the ceremonial code of polite society.
Sentence Examples
It's a matter of etiquette.
It is not etiquette to do so.
CEFR Practice Quiz
Learning the local ____ is important when traveling to a foreign country to avoid giving offense.