Pronunciation: (līt'n),[key] —v.i. 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.
—v.t. 1. to give light to; illuminate: A full moon lightened the road. 2. to brighten (the eyes, features, etc.): A large smile lightened his face. 3. to make lighter or less dark: Add white to lighten the paint. 4. Obs.enlighten.
5. Obs.to flash or emit like lightning (usually fol. by out, forth, or down): eyes that lightened forth implacable hatred.
Pronunciation: (līt'n),[key] —v.t. 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.
—v.i. 1. to become less severe, stringent, or harsh; ease up: Border inspections have lightened recently. 2. to become less heavy, cumbersome, burdensome, oppressive, etc.: His worries seem to have lightened somewhat. 3. to become less gloomy; perk up: People's spirits usually lighten when spring arrives.