courtesy · noun U /ˈkɜrt̬.ə.si/Full view
B2 polite behavior
Dictionary examples:

The hotel staff must treat guests with courtesy at all times.

He could have at least had the courtesy to say he's sorry.

Learner example:

As McDonald's is a fast food restaurant, the service is speedy, but courtesy is sometimes poor. (First Certificate in English; B2; Chinese)

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