| 1. | to become lighter or less dark; brighten: The sky lightened after the storm. |
| 2. | to brighten or light up, as the eyes or features: Her face lightened when she heard the good news. |
| 3. | to flash as or like lightning (often used impersonally with it as subject): It thundered and lightened for hours. |
| 4. | Archaic. to shine, gleam, or be bright: steel blades lightening in the sun. |
| 5. | to give light to; illuminate: A full moon lightened the road. |
| 6. | to brighten (the eyes, features, etc.): A large smile lightened his face. |
| 7. | to make lighter or less dark: Add white to lighten the paint. |
| 8. | Obsolete. enlighten. |
| 9. | Obsolete. to flash or emit like lightning (usually fol. by out, forth, or down): eyes that lightened forth implacable hatred. |
| 1. | to make lighter in weight: to lighten the load on a truck. |
| 2. | to lessen the load of or upon: to lighten a cargo ship. |
| 3. | to make less burdensome or oppressive; alleviate; mitigate: to lighten taxes; to lighten someone's cares. |
| 4. | to cheer or gladden: Such news lightens my heart. |
| 5. | to become less severe, stringent, or harsh; ease up: Border inspections have lightened recently. |
| 6. | to become less heavy, cumbersome, burdensome, oppressive, etc.: His worries seem to have lightened somewhat. |
| 7. | to become less gloomy; perk up: People's spirits usually lighten when spring arrives. |
light·en 2 (līt'n) v. light·ened, light·en·ing, light·ens v. tr.
lighten up Informal To take matters less seriously: Everything will work out fine, so stop worrying and lighten up. |