manners

noun[plural only]2

1. •
   the ways of behaving that people think are good and right when they are with others

   • O, how thy worth with manners may I sing, When thou art all the better part of me? — 1609
2. •
   Good manners.

   • When you come to this time of abatement, / To this passing from Summer to Fall, / It is manners to issue a statement / As to what you got out of it all. — 1936