decrease
Americanverb (used without object)
-
decreases,
present (3rd person singular)
-
decreased,
past participle, past
-
decreasing
present participle
verb (used with object)
-
decreases,
present (3rd person singular)
-
decreased,
past participle, past
-
decreasing
present participle
noun
-
decreases
plural
-
the act or process of decreasing; condition of being decreased; gradual reduction.
a decrease in sales;
a decrease in intensity.
- Synonyms:
- subsidence, decline, abatement
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the amount by which a thing is lessened.
The decrease in sales was almost 20 percent.
verb
noun
-
the act or process of diminishing; reduction
-
the amount by which something has been diminished
Usage
What does decrease mean? To decrease is to lessen or become reduced in number, amount, size, or in some other way, as in Our profits will continue to decrease unless we cut costs. As a verb, decrease is also used in an active way in which someone or something is doing the decreasing, as in I’m going to decrease my hours at work or These sunglasses decrease glare. The word reduce is perhaps even more commonly used to mean the same thing. Decrease can also be used as a noun referring to a reduction, as in We are experiencing a decrease in applicants. It can also refer to the amount by which something has decreased, as in The decrease was $5,000 per year. The words decreased and decreasing can both be used as adjectives, as in a decreased appetite or decreasing sales. The opposite of decrease as both a verb and a noun is increase. Example: Sally decided to decrease her workload, which led to a decrease in stress.
Synonym Usage
Decrease, diminish, dwindle, shrink imply becoming smaller or less in amount. Decrease commonly implies a sustained reduction in stages, especially of bulk, size, volume, or quantity, often from some imperceptible cause or inherent process: The swelling decreased daily. Diminish usually implies the action of some external cause that keeps taking away: Disease caused the number of troops to diminish steadily. Dwindle implies an undesirable reduction by degrees, resulting in attenuation: His followers dwindled to a mere handful. Shrink especially implies contraction through an inherent property under specific conditions: Many fabrics shrink in hot water.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Participles
Conjugated Forms
Present
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decreasesimple
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decreasessimple
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have decreasedperfect
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has decreasedperfect
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am decreasingprogressive
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are decreasingprogressive
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is decreasingprogressive
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have been decreasingperfect progressive
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has been decreasingperfect progressive
Past
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decreasedsimple
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had decreasedperfect
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was decreasingprogressive
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were decreasingprogressive
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had been decreasingperfect progressive
Future
Etymology
Origin of decrease
First recorded in 1350–1400; Middle English verb decresen, from Old French decreiss-, long stem of decreistre, from Latin dēcrēscere “to diminish,” literally “to grow down,” equivalent to dē- de- + crēscere “to grow”); noun derivative of the verb; see crescent
Explanation
Decrease means to lower or go down. If you are driving above the speed limit, you should decrease your speed or risk getting a ticket. Students always want teachers to decrease the amount of homework. The opposite of decrease is increase, which means to raise. In science, you often are measuring increases and decreases. Is there a decrease in the time it takes water to boil when you begin with water as a liquid rather than water in its ice-cube form?
Vocabulary lists containing decrease
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Ratios and Proportional Relationships
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Ratios and Proportional Relationships
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Lower levels of sunlight - depending on where in the world you live or the time of year - decrease the body's ability to produce it.
From BBC ● Oct. 30, 2026
The BEA said the acceleration in GDP growth was driven by an increase in investment and an upturn in government spending, which were partially offset by a decrease in exports.
From Barron's ● Oct. 29, 2026
Earnings in the steel mills and steel products segments are expected to be stable, with an expected slight decrease in earnings from the raw materials segment.
From The Wall Street Journal ● Oct. 26, 2026
Using this type of flat rate structure would significantly decrease the amount that beneficiaries receive over their lifetimes.
From MarketWatch ● Oct. 26, 2026
As I said, I thought at first that the no boundary condition did indeed imply that disorder would decrease in the contracting phase.
From "A Brief History of Time: And Other Essays" by Stephen Hawking
Multiple sources have told BBC Sport that Newcastle - with a view to protecting themselves against Howe walking straight into another club - reached an agreement over a compensation structure that decreases over time.
From BBC ● Oct. 30, 2026
As it moves upward, the surrounding pressure decreases, reducing the amount of oxygen the molten rock can retain.
From Science Daily ● Oct. 29, 2026
Central bank officials are penciling in one more rate increase this year and no increases for 2027 — but no decreases, either.
From MarketWatch ● Oct. 28, 2026
Among the world's top-six emitters, preliminary data for 2025 showed emissions increases in the US, Indonesia and China and decreases in India, Russia and the European Union.
From Barron's ● Oct. 21, 2026
The entropy of a closed system never decreases.
From "All the Light We Cannot See" by Anthony Doerr
In the same period, errors by MI6 decreased from 10 to three.
From BBC ● Oct. 29, 2026
Mean arterial pressure, a measure of average blood pressure throughout the cardiac cycle, also decreased significantly.
From Science Daily ● Oct. 27, 2026
Unsheltered homelessness decreased for the first two years, but the latest homeless count showed the numbers are growing once again.
From Los Angeles Times ● Oct. 26, 2026
With the significantly decreased profits, she added, "there certainly are people who are asking themselves, is this worth it?"
From Barron's ● Oct. 24, 2026
Compared to the normal brain, Algernons had decreased in weight and there was a general smoothing out of the cerebral convolutions as well as a deepening and broadening of brain fissures.
From "Flowers for Algernon" by Daniel Keyes
"If we can show that we're really decreasing brain cell death, it's certainly worth trying to pursue that pathway to prevent the most devastating consequences of these diseases."
From Science Daily ● Oct. 20, 2026
The state ballot measures aim to fix the housing crisis in various ways, from amending regulations so home-building is easier, to decreasing the ongoing cost of homeownership by cutting taxes.
From MarketWatch ● Oct. 13, 2026
As New York expanded uptown and the population increased, African-Americans made up a decreasing share of New Yorkers.
From The Wall Street Journal ● Sep. 13, 2026
The climate pattern promotes hurricane formation in the tropical Pacific while decreasing their likelihood in the Atlantic.
From Barron's ● Sep. 8, 2026
During most of the movie Mrs. Reilly thought about Ignatius’ rapidly decreasing salary, the payment on the trumpet, the payment on the wrecked building, the earring, and the sign.
From "A Confederacy of Dunces" by John Kennedy Toole
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
