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

• abate
• de-escalate
• decrease
• dent
• deplete
• diminish
• downscale
• downsize
• drop
• dwindle
• ease
• knock down
• lower
• reduce

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

Ideal for the ultimate no-makeup makeup look, for which Westman is known, the innovative blush harnesses biomimicry pigment technology, which lessens the risk of inflammation by encapsulating the synthetic pigments in the blush. —Jenny Berg, Vogue, 18 Mar. 2025

Poor diet linked to severe measles disease Kennedy has claimed that poor nutrition plays a role in causing severe measles disease and that a healthy diet can lessen severity. —Mary Kekatos, ABC News, 14 Mar. 2025

Groups representing physicians, including the American Academy of Pediatrics, continue to endorse adding fluoride to drinking water as a way to reduce tooth decay and lessen the prevalence of cavities. —Douglas Hanks, Miami Herald, 13 Mar. 2025

His comments come after President Trump imposed 25% tariffs on Canadian and Mexican imports and 10% levies on Chinese goods, in a bid to lessen the U.S.′ trade deficit with counterparties. —Charlotte Reed, CNBC, 11 Mar. 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