lightness
Webster 1828
LIGHTNESS, noun li'teness.1. Want of weight; levity; the contrary to heaviness; as the lightness of air, compared with water.2. Inconstancy; unsteadiness; the quality of mind which disposes it to be influenced by trifling considerations.- Such is the lightness of you common men.3. Levity; wantonness; lewdness; unchastity.4. Agility; nimbleness