To save this word, you'll need to log in.
un·friv·o·lous | \ ˌən-ˈfri-və-ləs 
\
\Definition of unfrivolous
: not frivolous : having real seriousness or importance
an unfrivolous objection the unfrivolous matter of the national budget
Keep scrolling for more
Comments on unfrivolous
What made you want to look up unfrivolous? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Intact Latin Quiz
- What did focus mean in Latin?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- Intact Latin Quiz
What did each of these words mean to ancient Romans?
Take the quiz - The Eponym Quiz
Do you know these words that come from names?
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Bee Cubed
Listen to the words and spell through all three levels.
Play the game
Share unfrivolous
Time Traveler for unfrivolous
The first known use of unfrivolous was in 1840
See more words from the same year