mannerly
Definitions
Exhibiting good manners; polite and well-bred.
Conforming to the customs of polite society; decorous.
Examples
The children were praised for their mannerly behavior during the formal dinner.
It is important to be mannerly when interacting with guests in a professional setting.
Synonyms
polite courteous well-bred civil refined gentlemanly respectful
Antonyms
rude impolite ill-mannered discourteous uncivil boorish churlish