D defs.my
Entry 1 sense Webster, 1913

Decorum

/dĭk-ôr'-əm/ · De·cor·um · IPA /dɪˈkɔːɹəm/
01 n. Propriety of manner or conduct; grace arising from suitableness of speech and behavior to one's own character, or to the place and occasion…
  1. 1.
    Propriety of manner or conduct; grace arising from suitableness of speech and behavior to one's own character, or to the place and occasion; decency of conduct; seemliness; that which is seemly or suitable.
    “Negligent of the duties and decorums of his station.” Hallam.
    “If your master Would have a queen his beggar, you must tell him, That majesty, to keep decorum, must No less beg than a kingdom.” Shak.
Syn. Decorum, Dignity.
Decorum, in accordance with its etymology, is that which is becoming in outward act or appearance; as, the decorum of a public assembly. Dignity springs from an inward elevation of soul producing a corresponding effect on the manners; as, dignity of personal appearance.