decorous

[dek-er-uhs, dih-kawr-uhs, -kohr-] [ˈdɛkərəs, dɪˈkɔrəs, -ˈkoʊr-]
adjective
  • showing proper or correct behavior
  • characterized by propriety in manners, conduct, etc.
  • "Those two simply don't know what decorous behavior is, and I certainly won’t be labeled a martinet for trying to teach them!"