IPA: /dɪˈkɔːrəm/
KK: /dɪˈkɔrəm/
Decorum refers to the proper and polite behavior or conduct that is expected in social situations. It can also mean the appropriateness of style or tone in artistic works.
At the formal dinner, everyone was expected to maintain a sense of decorum.
Decorum is derived from the Latin word "decorus" (meaning proper or seemly) and the suffix "-um" (a neuter noun ending). The word "decorum" refers to the quality of being proper, dignified, and in good taste, often in social behavior or conduct.
Think of 'decorus' meaning proper or seemly, which helps you remember that 'decorum' refers to behaving in a proper and dignified manner.