an act or behavior that is improper or inappropriate
a violation of social norms or ethics
सामाजिक मानदंडों या नैतिकता का उल्लंघन
English Usage: His comments were considered a serious impropriety during the formal event.
Hindi Usage: उनके टिप्पणी को औपचारिक कार्यक्रम के दौरान एक गंभीर अनुचितता माना गया।