decorum
proper behavior or good taste
Root
- decor: fitting, proper, graceful, or ornamental
Other words with the decor root
- decorate: to ornament or make more attractive
- decoration: ornament or act of decorating
- decorous: proper, tasteful, or well-behaved
- indecorous: improper or lacking good taste
Decor means fitting or proper. Decorum is behavior fitted to the occasion.
The courtroom required a level of decorum the crowd did not expect.