politeness
ポライトネス
Courtesy
Etiquette
Formality
Intercultural competence
Polite fiction
Politeness maxims (Geoffrey Leech)
politeness theory, which elaborates terms such as "positive politeness" and "negative politeness"
Register (sociolinguistics)
Respect
Valediction, expression used to say farewell (e.g. to end a letter) or the act of saying parting
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image politeness
define politeness
wikipedia politeness
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kotobank politeness
jisho politeness