frivol
0 antonyms and opposites of frivol, grouped by meaning.
Noun — An unserious person; a shallow person.
We haven't recorded synonyms for frivol yet. You can still read its full definition, where it comes from, or words that rhyme with it.
Etymology
From French frivole, from Latin frīvolus (“trifling, worthless”).
Full origin of frivol →