Definitions

1. adjective

lacking seriousness or importance; silly or absurd.

“The comedian’s jokes were a frivolous attempt to make us laugh.”

2. noun

a frivolous person or thing.

“The artist’s frivolous sculpture was seen as a waste of time.”

3. verb

to behave or spend time in a frivolous way.

“She frivolously spent her allowance on expensive clothes.”