lighten

1 of 2

verb (1)

light·​en ˈlī-tᵊn How to pronounce lighten (audio)
lightened; lightening ˈlīt-niŋ How to pronounce lighten (audio)
ˈlī-tᵊn-iŋ

transitive verb

1
: to make light or clear : illuminate
2
archaic : enlighten
3
: to make (something, such as a color) lighter

intransitive verb

1
a
archaic : to shine brightly
b
: to grow lighter : brighten
2
: to give out flashes of lightning

lighten

2 of 2

verb (2)

lightened; lightening ˈlīt-niŋ How to pronounce lighten (audio)
ˈlī-tᵊn-iŋ

transitive verb

1
a
: to relieve of a burden in whole or in part
the news lightened his mind
b
: to reduce in weight or quantity : lessen
c
: to make less wearisome : alleviate
lighten our sorrow
2

intransitive verb

1
: to become lighter or less burdensome
2
: to become more cheerful
Choose the Right Synonym for lighten

relieve, alleviate, lighten, assuage, mitigate, allay mean to make something less grievous.

relieve implies a lifting of enough of a burden to make it tolerable.

took an aspirin to relieve the pain

alleviate implies temporary or partial lessening of pain or distress.

the lotion alleviated the itching

lighten implies reducing a burdensome or depressing weight.

good news would lighten our worries

assuage implies softening or sweetening what is harsh or disagreeable.

ocean breezes assuaged the intense heat

mitigate suggests a moderating or countering of the effect of something violent or painful.

the need to mitigate barbaric laws

allay implies an effective calming or soothing of fears or alarms.

allayed their fears

Examples of lighten in a Sentence

Verb (1) the room was gradually lightened by the rising sun Verb (2) the patient lightened when he heard the disease responds well to treatment
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Verb
While some Democrats are looking to lighten the bureaucratic load, Trump and his congressional allies see it as an effective way to achieve their goal of barring low- and middle-income households from accessing government assistance. Howard Gleckman, Forbes.com, 9 June 2025 After a couple of drinks or snacks, the backpack will lighten. Bestreviews, Chicago Tribune, 6 June 2025 When friendships implode: Elon Musk says Trump 'would have lost the election' Social media reacts to Trump, Musk feud While there are some serious claims being thrown around, the internet attempted to lighten the mood with jokes − even some fellow politicians chimed in. Melina Khan, USA Today, 6 June 2025 In several states and the District of Columbia, senior residents already benefit from property tax exemptions, credits and freezes that try to lighten the financial burden on their shoulders. Giulia Carbonaro, MSNBC Newsweek, 2 June 2025 See All Example Sentences for lighten

Word History

Etymology

Verb (1)

Middle English lightenen, from light

First Known Use

Verb (1)

14th century, in the meaning defined at transitive sense 1

Verb (2)

14th century, in the meaning defined at transitive sense 1a

Time Traveler
The first known use of lighten was in the 14th century

Cite this Entry

“Lighten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lighten. Accessed 16 Jun. 2025.

Kids Definition

lighten

1 of 2 verb
light·​en ˈlīt-ᵊn How to pronounce lighten (audio)
lightened; lightening ˈlīt-niŋ How to pronounce lighten (audio)
-ᵊn-iŋ
1
: to make or become light, lighter, or clear : brighten
2
: to give out flashes of lightning
lightener
ˈlīt-nər How to pronounce lighten (audio)
-ᵊn-ər
noun

lighten

2 of 2 verb
lightened; lightening ˈlīt-niŋ How to pronounce lighten (audio)
-ᵊn-iŋ
: to make or become less heavy or less difficult
lighten a load
lightened her duties
lightener
ˈlīt-nər How to pronounce lighten (audio)
-ᵊn-ər
noun

More from Merriam-Webster on lighten

Last Updated: - Updated example sentences
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