levity

noun levities

1. uncountable, usually A lightness of manner or speech, frivolity; flippancy; a lack of appropriate seriousness; an inclination to make a joke of serious matters. An attempt to inject a little levity into the proceedings.

   Opposite: gravity

2. obsolete, uncountable, usually A lack of steadiness.
3. uncountable, usually The state or quality of being light, buoyancy. Most of the confidences were unsought - frequently I have feigned sleep, preoccupation or a hostile levity […]
4. countable, usually A lighthearted or frivolous act. For though it be something wonderful to tell that any should have hearts so hardened, in the midst of such a calamity, as to rob and steal, yet certain it is that all sorts of villainies, and even levities and debaucheries, were then practiced in the town as openly as ever: I will not say quite as f