triviality

noun

1. The quality or state of being trivial; lack of importance or seriousness.

   B2
   • "He was bored by the triviality of the conversation."B2
   • "The sheer triviality of the argument made everyone laugh."C1

2. A trivial matter, detail, or thing; something unimportant.

   B2

   usually plural

   • "She didn't want to waste time on trivialities."B2
   • "Don't bother me with such trivialities."C1