The appropriateness of an element of an artistic or literary work, such as style or tone, to its particular circumstance or to the composition as a whole.
Perhaps you could respond to Andy's points and restore a little decorum here.
She accepted his report, not without obvious sadness but with business-like decorum and no sign of tears.
We trust he will show the proper decorum for the occasion.
He was a regular observer of religious rites, took great pains to secure decorum in the services of the church, and was generous in almsgiving both within his empire and without.