The Vietnamese word "lịch sự" is an adjective that means "polite," "civil," or "courteous." It describes behavior or manners that show respect and consideration for others. Being "lịch sự" is an important aspect of Vietnamese culture, as it reflects good upbringing and social awareness.
While "lịch sự" primarily means polite or courteous, it can also imply a sense of formality or adherence to social norms.