Definition: actions that are in good taste and/or fit a certain environment or situation
Part of Speech: Noun
Synonym(s): demeanor, breeding
Antonym(s): impoliteness, impropriety
1. My date’s lack of decorum and poor manners caused me a great deal of embarrassment at the Christmas party.
2. If you had a sense of decorum, you wouldn’t talk with your mouth full.
3. As a member of the royal family, you must exhibit a high standard of decorum at all social events.