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intr. & tr.v. de·creased, de·creas·ing, de·creas·es
To become or cause to become less or smaller, as in number, amount, or intensity.
n. (dē′krēs′)
1. The act or process of decreasing.
2. The amount by which something decreases.

[Middle English decresen, from Old French decreistre, decreiss-, from Latin dēcrēscere : dē-, de- + crēscere, to grow; see ker- in Indo-European roots.]

de·creas′ing·ly adv.
Synonyms: decrease, lessen, reduce, dwindle, abate, diminish, subside
These verbs mean to become smaller or less or to cause something to become smaller or less. Decrease and lessen have the most general application: saw the plane descend as its speed decreased; vowed to decrease government spending; an appetite that lessened as the disease progressed; restrictions aimed at lessening the environmental impact of off-road vehicles.
Reduce often emphasizes bringing down in size, degree, or intensity: reduced the heat once the mixture reached a boil; workers who refused to reduce their wage demands.
Dwindle suggests decreasing bit by bit to a vanishing point: savings that dwindled away in retirement.
Abate stresses a decrease in amount or intensity and suggests a reduction of excess: a blustery wind that abated toward evening; increased the dosage in an effort to abate the pain.
Diminish stresses the idea of loss or depletion: a breeze that arose as daylight diminished; a scandal that diminished the administration's authority.
Subside implies a falling away to a more normal level or state: floodwaters that did not subside until days after the storm passed; anger that subsided with understanding.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


to diminish or cause to diminish in size, number, strength, etc
1. the act or process of diminishing; reduction
2. the amount by which something has been diminished
[C14: from Old French descreistre, from Latin dēcrescere to grow less, from de- + crescere to grow]
deˈcreasing adj
deˈcreasingly adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(v. dɪˈkris; n. ˈdi kris, dɪˈkris)

v. -creased, -creas•ing,
n. v.i.
1. to lessen, esp. by degrees, as in extent, quantity, strength, or power; diminish.
2. to make less; cause to diminish.
3. the act or process of decreasing; gradual reduction.
4. the amount by which a thing is lessened.
[1350–1400; Middle English < Old French decreiss-, long s. of decreistre < Latin dēcrēscere (dē- de- + crēscere to grow); see crescent]

syn: decrease, diminish, dwindle, shrink imply becoming smaller or less in amount. decrease commonly implies a sustained reduction in stages, esp. of bulk, size, volume, or quantity, often from some imperceptible cause or inherent process: The swelling decreased daily. diminish usu. 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 esp. implies contraction through an inherent property under specific conditions: Many fabrics shrink in hot water.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


  1. Contract, like the pupil of an eye that confronts the sun —John Hall Wheelock
  2. (My avarice) cooled like lust in the chill of the grave —Ralph Waldo Emerson
  3. Decrease like a cigar: the harder you puff on it, the shorter it gets —Anon

    The cigar has also been likened to an actor; e. g., “An actor decreases like a cigar; the more you puff him, the smaller he gets.”


  4. Decrease like a lemon drop; the more you lick it, the less it becomes —Anon
  5. Decrease like hair after each decade —Mike Sommer
  6. Devour [information] like baseball addicts devour box scores —David E. Sanger, New York Times, December 14, 1985
  7. Diminished and flat, as after radical surgery —Sylvia Plath
  8. (All my efforts) diminish like froth —Erich Maria Remarque
  9. Drain (as a day’s happenings) like water running out of a tub —Andre Dubus
  10. Energy … draining out like sand —May Sarton
  11. Gobble up cash the way electronic equipment gobbles up batteries —Anon
  12. Goes down like an ebbing tide —Henry James

    James let the hero of his play, Guy Domville, use the ebbing tide comparison to explain the nature of his ignorance.

  13. Go through [as bottle of pills] like a bull breaks a fence —Anon
  14. Pared like a carrot —John Russell

    This is often used to mean humiliation.

  15. (The conversation was already) petering out like a smoldering cigarette end —Stefan Zweig
  16. Receding like a threatened headache which hasn’t materialized —William Mcllvanney
  17. Shrinking as violets do in summer —Thomas Moore

    The original ended with “As violets do in summer’s rays.”

  18. Shrinking like aches —Charles Wright
  19. Shrivel up like the tendrils of a creeper when thrown on a bonfire —Francis King
  20. Shrunken as a beggar’s heart —Stephen Vincent Benét
  21. Use up as fast as a ten dollar bill in the supermarket —Anon
  22. Use up, like a cake of soap —Elyse Sommer
  23. Wore off [feeling of self-confidence] quicker than champagne —Edith Wharton
Similes Dictionary, 1st Edition. © 1988 The Gale Group, Inc. All rights reserved.


Past participle: decreased
Gerund: decreasing

I decrease
you decrease
he/she/it decreases
we decrease
you decrease
they decrease
I decreased
you decreased
he/she/it decreased
we decreased
you decreased
they decreased
Present Continuous
I am decreasing
you are decreasing
he/she/it is decreasing
we are decreasing
you are decreasing
they are decreasing
Present Perfect
I have decreased
you have decreased
he/she/it has decreased
we have decreased
you have decreased
they have decreased
Past Continuous
I was decreasing
you were decreasing
he/she/it was decreasing
we were decreasing
you were decreasing
they were decreasing
Past Perfect
I had decreased
you had decreased
he/she/it had decreased
we had decreased
you had decreased
they had decreased
I will decrease
you will decrease
he/she/it will decrease
we will decrease
you will decrease
they will decrease
Future Perfect
I will have decreased
you will have decreased
he/she/it will have decreased
we will have decreased
you will have decreased
they will have decreased
Future Continuous
I will be decreasing
you will be decreasing
he/she/it will be decreasing
we will be decreasing
you will be decreasing
they will be decreasing
Present Perfect Continuous
I have been decreasing
you have been decreasing
he/she/it has been decreasing
we have been decreasing
you have been decreasing
they have been decreasing
Future Perfect Continuous
I will have been decreasing
you will have been decreasing
he/she/it will have been decreasing
we will have been decreasing
you will have been decreasing
they will have been decreasing
Past Perfect Continuous
I had been decreasing
you had been decreasing
he/she/it had been decreasing
we had been decreasing
you had been decreasing
they had been decreasing
I would decrease
you would decrease
he/she/it would decrease
we would decrease
you would decrease
they would decrease
Past Conditional
I would have decreased
you would have decreased
he/she/it would have decreased
we would have decreased
you would have decreased
they would have decreased
Collins English Verb Tables © HarperCollins Publishers 2011
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.decrease - a change downwarddecrease - a change downward; "there was a decrease in his temperature as the fever subsided"; "there was a sharp drop-off in sales"
alteration, change, modification - an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"
shrinkage, shrinking - process or result of becoming less or smaller; "the material lost 2 inches per yard in shrinkage"
casualty - a decrease of military personnel or equipment
sinking - a slow fall or decline (as for lack of strength); "after several hours of sinking an unexpected rally rescued the market"; "he could not control the sinking of his legs"
attrition - a wearing down to weaken or destroy; "a war of attrition"
dwindling, dwindling away - a becoming gradually less; "there is no greater sadness that the dwindling away of a family"
waning - a gradual decrease in magnitude or extent; "the waning of his enthusiasm was obvious"; "the waxing and waning of the moon"
increase - a change resulting in an increase; "the increase is scheduled for next month"
2.decrease - a process of becoming smaller or shorter
physical process, process - a sustained phenomenon or one marked by gradual changes through a series of states; "events now in process"; "the process of calcification begins later for boys than for girls"
decay, decline - a gradual decrease; as of stored charge or current
decline, diminution - change toward something smaller or lower
desensitisation, desensitization - the process of reducing sensitivity; "the patient was desensitized to the allergen"
narrowing - a decrease in width
slippage - a decrease of transmitted power in a mechanical system caused by slipping
wastage - the process of wasting
increment, growth, increase - a process of becoming larger or longer or more numerous or more important; "the increase in unemployment"; "the growth of population"
3.decrease - the amount by which something decreases
amount - the relative magnitude of something with reference to a criterion; "an adequate amount of food for four people"
free fall, drop, dip, fall - a sudden sharp decrease in some quantity; "a drop of 57 points on the Dow Jones index"; "there was a drop in pressure in the pulmonary artery"; "a dip in prices"; "when that became known the price of their stock went into free fall"
shrinkage - the amount by which something shrinks
increment, increase - the amount by which something increases; "they proposed an increase of 15 percent in the fare"
4.decrease - the act of decreasing or reducing somethingdecrease - the act of decreasing or reducing something
change of magnitude - the act of changing the amount or size of something
cut - the act of reducing the amount or number; "the mayor proposed extensive cuts in the city budget"
mitigation, moderation - the action of lessening in severity or intensity; "the object being control or moderation of economic depressions"
lowering - the act of causing to become less
cutback - a reduction in quantity or rate
devaluation - the reduction of something's value or worth
devitalisation, devitalization - the act of reducing the vitality of something
mitigation, palliation, extenuation - to act in such a way as to cause an offense to seem less serious
alleviation, easement, easing, relief - the act of reducing something unpleasant (as pain or annoyance); "he asked the nurse for relief from the constant pain"
de-escalation - (war) a reduction in intensity (of a crisis or a war)
minimisation, minimization - the act of reducing something to the least possible amount or degree or position
depletion - the act of decreasing something markedly
shortening - act of decreasing in length; "the dress needs shortening"
shrinking - the act of becoming less
subtraction, deduction - the act of subtracting (removing a part from the whole); "he complained about the subtraction of money from their paychecks"
deflation - the act of letting the air out of something
discount, price reduction, deduction - the act of reducing the selling price of merchandise
rollback - reducing prices back to some earlier level
weakening - the act of reducing the strength of something
depreciation - a decrease in price or value; "depreciation of the dollar against the yen"
contraction - the act of decreasing (something) in size or volume or quantity or scope
reverse split, reverse stock split, split down - a decrease in the number of outstanding shares of a corporation without changing the shareholders' equity
amortisation, amortization - the reduction of the value of an asset by prorating its cost over a period of years
declassification - reduction or removal by the government of restrictions on a classified document or weapon
tax shelter, shelter - a way of organizing business to reduce the taxes it must pay on current earnings
tax credit - a direct reduction in tax liability (not dependent on the taxpayer's tax bracket)
step-up, increase - the act of increasing something; "he gave me an increase in salary"
Verb1.decrease - decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper"
break - diminish or discontinue abruptly; "The patient's fever broke last night"
shrivel, shrink - decrease in size, range, or extent; "His earnings shrank"; "My courage shrivelled when I saw the task before me"
taper - diminish gradually; "Interested tapered off"
drop off - fall or diminish; "The number of students in this course dropped off after the first test"
vaporize, vanish, fly - decrease rapidly and disappear; "the money vanished in las Vegas"; "all my stock assets have vaporized"
break - fall sharply; "stock prices broke"
ease off, slacken off, ease up, flag - become less intense
change magnitude - change in size or magnitude
weaken - become weaker; "The prisoner's resistance weakened after seven days"
boil down, decoct, concentrate, reduce - be cooked until very little liquid is left; "The sauce should reduce to one cup"
shrink, contract - become smaller or draw together; "The fabric shrank"; "The balloon shrank"
shrink, shrivel, shrivel up, wither - wither, as with a loss of moisture; "The fruit dried and shriveled"
die away, let up, slack off, abate, slack - become less in amount or intensity; "The storm abated"; "The rain let up after a few hours"
deflate - become deflated or flaccid, as by losing air; "The balloons deflated"
dwindle, dwindle away, dwindle down - become smaller or lose substance; "Her savings dwindled down"
remit - diminish or abate; "The pain finally remitted"
de-escalate - diminish in size, scope, or intensity; "The war of words between them de-escalated with time"
devaluate, devalue, undervalue, depreciate - lose in value; "The dollar depreciated again"
shorten - become short or shorter; "In winter, the days shorten"
thin out - become sparser; "Towards the end of town, the houses thinned out"
wane, go down, decline - grow smaller; "Interest in the project waned"
wane - decrease in phase; "the moon is waning"
wane - become smaller; "Interest in his novels waned"
decelerate, slow, slow down, slow up - lose velocity; move more slowly; "The car decelerated"
decrescendo - grow quieter; "The music decrescendoes here"
increase - become bigger or greater in amount; "The amount of work increased"
2.decrease - make smallerdecrease - make smaller; "He decreased his staff"
alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
suppress - reduce the incidence or severity of or stop; "suppress a yawn"; "this drug can suppress the hemorrhage"
mitigate - make less severe or harsh; "mitigating circumstances"
pare, pare down - decrease gradually or bit by bit
circumscribe, confine, limit - restrict or confine, "I limit you to two visits to the pub a day"
boil down, concentrate, reduce - cook until very little liquid is left; "The cook reduced the sauce by boiling it for a long time"
shrink, reduce - reduce in size; reduce physically; "Hot water will shrink the sweater"; "Can you shrink this image?"
abbreviate, abridge, foreshorten, shorten, contract, reduce, cut - reduce in scope while retaining essential elements; "The manuscript must be shortened"
abate, slake, slack - make less active or intense
lour, lower, turn down - make lower or quieter; "turn down the volume of a radio"
de-escalate, step down, weaken - reduce the level or intensity or size or scope of; "de-escalate a crisis"
minimize, minimise - make small or insignificant; "Let's minimize the risk"
cut down, reduce, trim back, trim down, cut, cut back, trim, bring down - cut down on; make a reduction in; "reduce your daily fat intake"; "The employer wants to cut back health benefits"
cut - have a reducing effect; "This cuts into my earnings"
slack up, slacken, slack, relax - make less active or fast; "He slackened his pace as he got tired"; "Don't relax your efforts now"
diminish, belittle - lessen the authority, dignity, or reputation of; "don't belittle your colleagues"
increase - make bigger or more; "The boss finally increased her salary"; "The university increased the number of students it admitted"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


1. drop, decline, lessen, contract, lower, ease, shrink, diminish, fall off, dwindle, wane, subside, abate, peter out, slacken Population growth is decreasing each year.
2. reduce, cut, lower, contract, depress, moderate, weaken, diminish, turn down, slow down, cut down, shorten, dilute, impair, lessen, curtail, wind down, abate, tone down, truncate, abridge, downsize Regular doses of aspirin decrease the risk of heart attack.
reduce extend, enlarge lessen increase, expand
1. lessening, decline, reduction, loss, falling off, downturn, dwindling, contraction, ebb, cutback, subsidence, curtailment, shrinkage, diminution, abatement There has been a decrease in the number of young unemployed people.
lessening growth, expansion, extension
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002


To grow or cause to grow gradually less:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
تَنَاقُصتَناقُص، هُبوط، إنْخِفاضيَتَنَاقَصُيُقَلِّل، يُنْقِص
minnkaminnkun, lækkun
zmanjšanjezmanjšati seznižanje
giảm bớtsự giảm đi


A. [ˈdiːkriːs] N (gen) → disminución f, reducción f; (in wages) → descenso m, bajada f; (in prices) → bajada f, disminución f
a decrease in speed/strengthuna reducción de velocidad/fuerza
a decrease of 50%una reducción del 50%
to be on the decreaseir disminuyendo
B. [diːˈkriːs] VT [+ quantity, pressure, dose, speed] → disminuir, reducir; [+ wages] → bajar, reducir
C. [diːˈkriːs] VI
1. [power, strength, popularity, temperature, pressure] → disminuir; [enthusiasm, interest] → disminuir, decaer
to decrease by 10%bajar or disminuir un 10%
2. (Knitting) → menguar
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


n (in number)diminution f; (in quantity, size)réduction f; (in value, price, demand, spending, sales)diminution f; (in unemployment, consumption)baisse f
a decrease in unemployment → une baisse du chômage
a decrease in the number of unemployed people → une diminution du nombre de chômeurs
to be on the decrease → diminuer, être en diminution
[diːˈkriːs] vt [+ consumption] → réduire; [+ production, output] → réduire
vi [number, rate, sales] → diminuer
The number of crashes decreased by 27 per cent → Le nombre des accidents a diminué de 27 pour-cents.
Sales decreased 7% during the first half of the year → Les ventes ont diminué de 7% durant la première moitié de l'année.
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


viabnehmen; (figures, output, life expectancy, birth rate, production)zurückgehen, abnehmen; (strength, enthusiasm, intensity)nachlassen; (in knitting) → abnehmen; in decreasing order of importancein der Reihenfolge ihrer Bedeutung; it decreases in valuees verliert an Wert
nAbnahme f; (in figures, output, life expectancy, birth rate, production) → Rückgang m; (in strength, enthusiasm, intensity) → Nachlassen nt; decrease in speedVerminderung or Abnahme fder Geschwindigkeit; to be on the decreaseabnehmen
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[n ˈdiːkriːs; vb diːˈkriːs]
1. n decrease (in) (amount, numbers, population, power) → diminuzione f (di); (birth rate, value, production, enthusiasm) → calo (di); (prices) → ribasso (di); (strength, dose) → riduzione f (di)
to be on the decrease → essere in diminuzione
2. vt (see n) → diminuire, far calare, ribassare, ridurre
3. vi (amount, numbers etc) → diminuire; (prices, birthrate etc) → calare (Knitting) → calare (le maglie)
to decrease by 10% → diminuire del 10%
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(diˈkriːs) verb
to make or become less. Their numbers had decreased over the previous year.
(ˈdiːkriːs) noun
a growing less. a decrease of fifty per cent; a gradual decrease in unemployment.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.


تَنَاقُص, يَتَنَاقَصُ snížení, snížit aftage, nedgang Rückgang, vermindern (sich) μειώνω, μείωση disminución, disminuir lasku, vähentyä diminuer, diminution smanjenje, smanjiti calare, calo 減少, 減少する 감소, 감소하다 afname, afnemen minske, nedgang zmniejszenie, zmniejszyć decréscimo, diminuir уменьшать, уменьшение minska, minskning การลดลง, ลดลง azalma, azalmak giảm bớt, sự giảm đi 减少
Multilingual Translator © HarperCollins Publishers 2009


n. disminución; reducción v. decrecer, disminuir, reducir;
___ saliva___ de saliva o reducción de saliva;
___ tears___ de lágrimas o reducción de lágrimas;
___ urine output___ o reducción del rendimiento urinario.
English-Spanish Medical Dictionary © Farlex 2012


n disminución f; vt, vi disminuir(se)
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in classic literature ?
But this is a very false view: we forget that each species, even where it most abounds, is constantly suffering enormous destruction at some period of its life, from enemies or from competitors for the same place and food; and if these enemies or competitors be in the least degree favoured by any slight change of climate, they will increase in numbers, and, as each area is already fully stocked with inhabitants, the other species will decrease. When we travel southward and see a species decreasing in numbers, we may feel sure that the cause lies quite as much in other species being favoured, as in this one being hurt.
To keep up a mixed stock of even such extremely close varieties as the variously coloured sweet-peas, they must be each year harvested separately, and the seed then mixed in due proportion, otherwise the weaker kinds will steadily decrease in numbers and disappear.
We see this in the recent extension over parts of the United States of one species of swallow having caused the decrease of another species.
Consequently, the weight of a shot will decrease, and will become reduced to zero at the instant that the attraction of the moon exactly counterpoises that of the earth; that is to say at 47/52 of its passage.
This great man, as is well known to all lovers of polite eating, begins at first by setting plain things before his hungry guests, rising afterwards by degrees as their stomachs may be supposed to decrease, to the very quintessence of sauce and spices.
And it is just the same with horses: you fret and worry their tempers, and decrease their power; you will not let them throw their weight against their work, and so they have to do too much with their joints and muscles, and of course it wears them up faster.
The badly employed are those which, notwithstanding they may be few in the commencement, multiply with time rather than decrease. Those who practise the first system are able, by aid of God or man, to mitigate in some degree their rule, as Agathocles did.
She returned just in time to join the others as they quitted the house, on an excursion through its more immediate premises; and the rest of the morning was easily whiled away, in lounging round the kitchen garden, examining the bloom upon its walls, and listening to the gardener's lamentations upon blights, in dawdling through the green-house, where the loss of her favourite plants, unwarily exposed, and nipped by the lingering frost, raised the laughter of Charlotte,--and in visiting her poultry-yard, where, in the disappointed hopes of her dairy-maid, by hens forsaking their nests, or being stolen by a fox, or in the rapid decrease of a promising young brood, she found fresh sources of merriment.
Such a council, in fine, as a substitute for the plan of the convention, would be productive of an increase of expense, a multiplication of the evils which spring from favoritism and intrigue in the distribution of public honors, a decrease of stability in the administration of the government, and a diminution of the security against an undue influence of the Executive.
The social infrastructure systems business saw decreases in both orders and sales from the same period of the previous fiscal year due primarily to decreases in the transportation systems business in Japan and the power systems business outside Japan.
The decreases were primarily due to major hoisting capacity and shaft upgrades which delayed hoisting for two weeks, as well as electrical breakdowns exacerbated by Eskom power disruptions.
Comparable sales for clothing decreased primarily due to decreases in both transactions and units per transaction partially offset by an increase in average unit retail.