| 1. | the state or quality of being light in weight: the amazing lightness of the new metal. |
| 2. | the quality of being agile, nimble, or graceful. |
| 3. | lack of pressure or burdensomeness. |
| 4. | lack of seriousness; levity in actions, thoughts, or speech: That kind of lightness seemed out of place. |
| 5. | gaiety of manner, speech, style, etc.; cheerfulness: His lightness was just what the party needed. |