An example of frivolous is purchasing something you don't need.
An example of frivolous is a burglar suing a home owner for shooting them while breaking into their home.
A frivolous novel.
A frivolous purchase.
A frivolous remark, a frivolous youth.
Origin of frivolous
- Middle English probably from Latin frīvolus of little value probably from friāre to crumble
From American Heritage Dictionary of the English Language, 5th Edition
- From Latin frīvolus (“silly, empty, trifling, frivolous, worthless”).