levity
Pronunciation:
/ˈlɛ.vɪ.ti//ˈlɛ.vɪ.ti/noun
Definitions
Lightness of manner or speech, frivolity; lack of appropriate seriousness; inclination to make a joke of serious matters.
Lack of steadiness.
The state or quality of being light, buoyancy.
A lighthearted or frivolous act.