Definition: showing good conduct; polite; courteous; well-behaved

• Manners are like the shadow of virtues; they are the momentary display of those qualities which our fellow creatures love and respect. — Sydney Smith (1771–1845) English wit, writer, & cleric
• Manners are sensitive awareness of the feeling of others. If you have that awareness, you have good manners, no matter what fork you use. — Emily Post [née Price] American etiquette expert