frivolity
noun
[ frɪˈvɒlɪti ]
• lack of seriousness; light-heartedness.
• "a night of fun and frivolity"
Similar:
light-heartedness,
levity,
joking,
jocularity,
gaiety,
fun,
frivolousness,
silliness,
foolishness,
zaniness,
giddiness,
flightiness,
skittishness,
flippancy,
facetiousness,
inanity,
superficiality,
shallowness,
vacuity,
empty-headedness,
dizziness,
dippiness,
daftness,
ditziness,