lessen

verb

less·​en ˈle-sᵊn 

lessened; lessening ˈle-sᵊn-iŋ 

ˈles-niŋ

intransitive verb

: to shrink in size, number, or degree : decrease

The pain will lessen over time.

transitive verb

1

: to reduce in size, extent, or degree

lessen tensions between nations

2

a

archaic : to represent as of little value

b

: to lower in status or dignity : degrade

Synonyms

• reduce
• decrease

Choose the Right Synonym for lessen

decrease, lessen, diminish, reduce, abate, dwindle mean to grow or make less.

decrease suggests a progressive decline in size, amount, numbers, or intensity.

slowly decreased the amount of pressure

lessen suggests a decline in amount rather than in number.

has been unable to lessen her debt

diminish emphasizes a perceptible loss and implies its subtraction from a total.

his visual acuity has diminished

reduce implies a bringing down or lowering.

you must reduce your caloric intake

abate implies a reducing of something excessive or oppressive in force or amount.

the storm abated

dwindle implies progressive lessening and is applied to things growing visibly smaller.

their provisions dwindled slowly

Examples of lessen in a Sentence

Medication helps lessen the severity of the symptoms.

we lessened our efforts as it became clear they weren't having an effect

Recent Examples on the Web

The future of gene therapy At Miami-Dade’s public hospital system Jackson Health, new advancements in genetic research recently helped doctors modify a patient’s blood cells to lessen the effects of sickle cell disease, a painful blood disorder that can lead to life-threatening complications. —Michelle Marchante, Miami Herald, 19 June 2025

What’s certain is that while romantic connection has lessened, yearning for it certainly hasn’t. —Charley Locke, Vox, 16 June 2025

Physical activity is an important way to lessen muscle pain, especially for people with long COVID.127 Other Potential Causes Muscle aches are extremely common. —Sarah Hudgens, Health, 15 June 2025

Automated Testing & Quality Assurance: Through the use of AI, manual inspections are lessened through the analysis of large datasets gathered from sensors and tests, which allow for rapid identification of defects and anomalies. —Srinivasa Rao Bittla, Forbes.com, 13 June 2025

Word History

First Known Use

14th century, in the meaning defined at intransitive sense

Rhymes for lessen

• cresson
• lesson
• delicatessen
• vasopressin

Kids Definition

lessen

verb

less·​en ˈles-ᵊn 

lessened; lessening ˈles-niŋ 

-ᵊn-iŋ

: to make or become less