Decorum etymology

English

English word decorum comes from Latin decor (Beauty, charm. Elegance, grace.)

Detailed word origin of decorum

Dictionary entry Language Definition
decor Latin (lat) Beauty, charm. Elegance, grace.
decorus Latin (lat) Becoming, fitting, proper, suitable. Decorated, adorned; elegant, fine, beautiful.
decorum English (en) (countable) A convention of social behavior. (uncountable) Appropriate social behavior; propriety.