De*cor"um (?), n. [L. decrum, fr. decrus. See Decorous.]
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.
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.
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.
© Webster 1913.