The quality of being silly or trivial is frivolousness. If your mom wants to have a serious discussion about college, but you can't stop talking about your favorite reality TV shows, she might complain about your frivolousness.

Do you burst into song when your teacher asks you a serious question? Or dress in elaborate costumes that trip you up and get in the way while you're playing volleyball in gym class? Your frivolousness means you're carefree and happy — you probably spend a lot of time laughing. But it can get in the way when you really should be listening hard or getting down to work. The root of frivolousness means "broken, crumbling, or worthless."

Definitions of frivolousness

n the trait of being frivolous; not serious or sensible

earnestness, serious-mindedness, seriousness, sincerity
the trait of being serious
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giddiness, silliness
an impulsive scatterbrained manner
a manner lacking seriousness
fun, playfulness
a disposition to find (or make) causes for amusement
lightness, lightsomeness
the trait of being lighthearted and frivolous
flippancy, light-mindedness
inappropriate levity
humorousness, jocoseness, jocosity, merriness
the trait of merry joking
playful humor
archness, impertinence, perkiness, pertness, sauciness
inappropriate playfulness
friskiness, frolicsomeness, sportiveness
lively high-spirited playfulness
impishness, mischievousness, puckishness, whimsicality
the trait of behaving like an imp
humor, humour, sense of humor, sense of humour
the trait of appreciating (and being able to express) the humorous
Type of:
a distinguishing feature of your personal nature

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