lighten

¹ American  

[lahyt-n] / ˈlaɪt n /

verb (used without object)

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.

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verb (used with object)

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. Obsolete. enlighten.

5. Obsolete. to flash or emit like lightning (usually followed by out, forth, ordown ).

   eyes that lightened forth implacable hatred.

lighten ² American  

[lahyt-n] / ˈlaɪt n /

verb (used with object)

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.

   Synonyms:

   reduce, lessen, ease

   Antonyms:

   aggravate

4. to cheer or gladden.

   Such news lightens my heart.

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verb (used without object)

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.

lighten ¹ British  

/ ˈlaɪtən /

verb

1. to become or make light

2. (intr) to shine; glow

3. (intr) (of lightning) to flash

4. (tr) an archaic word for enlighten

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lighten ² British  

/ ˈlaɪtən /

verb

1. to make or become less heavy

2. to make or become less burdensome or oppressive; mitigate

3. to make or become more cheerful or lively

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Other Word Forms

• lightener noun

Etymology

Origin of lighten¹

First recorded in 1300–50; Middle English lightnen; light ¹, -en ¹

Origin of lighten²

First recorded in 1350–1400; Middle English lightnen; light ², -en ¹

Example Sentences

"We don't like taxes on fun," he said, adding: "We are going to find every possible way to lighten the load."

From BBC • Mar. 31, 2026

So I started to live by this, I started to lighten up.”

From MarketWatch • Feb. 10, 2026

She added that her brief interaction with Coen seemed to lighten the mood a bit in the room.

From Los Angeles Times • Jan. 14, 2026

The EU is also now working to lighten regulatory burdens that European companies say hurt their global competitiveness, although results aren’t yet clear.

From The Wall Street Journal • Dec. 28, 2025

As he spoke, his heart seemed to lighten.

From "The Black Cauldron" by Lloyd Alexander

Related Words

• alleviate
• ameliorate
• cut down
• dilute
• ease
• facilitate
• lessen
• mitigate
• mollify
• relieve