noun lack of steadiness or constancy; disposition to change; fickleness; volatility.
2. levity ·noun lack of gravity and earnestness in deportment or character; trifling gayety; frivolity; sportiveness; vanity.
3. levity ·noun the quality of weighing less than something else of equal bulk; relative lightness, especially as shown by rising through, or floating upon, a contiguous substance; buoyancy;
opposed to gravity.