decrease

[v. dih-krees; n. dee-krees, dih-krees]
verb (used without object), decreased, decreasing.
1.
to diminish or lessen in extent, quantity, strength, power, etc.: During the ten-day march across the desert their supply of water decreased rapidly.
verb (used with object), decreased, decreasing.
2.
to make less; cause to diminish: to decrease one's work load.
noun
3.
the act or process of decreasing; condition of being decreased; gradual reduction: a decrease in sales; a decrease in intensity.
4.
the amount by which a thing is lessened: The decrease in sales was almost 20 percent.

Origin:
1350–1400; Middle English decres (noun), decresen (v.) < Old French decreiss-, long stem of decreistre < Latin dēcrēscere (dē- de- + crēscere to grow); see crescent

undecreased, adjective


1. wane, lessen, fall off, decline, contract, abate. 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. 3. abatement, decline, subsidence, shrinking, dwindling, ebbing.


1. increase, expand.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
decrease
 
vb
1.  to diminish or cause to diminish in size, number, strength, etc
 
n
2.  the act or process of diminishing; reduction
3.  the amount by which something has been diminished
 
[C14: from Old French descreistre, from Latin dēcrescere to grow less, from de- + crescere to grow]
 
de'creasing
 
adj
 
de'creasingly
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

decrease
late 14c., from O.Fr. pp. stem of descreistre, from L. decrescere, from de- "away from" + crescere "to grow" (see crescent).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Underneath us, the rocks got looser and the amount of vegetation decreased.
So that's the start of what happens when we're not going out into nature:
  access to public green spaces will be decreased.
If the revenues are to remain as now, the only relief that can come must be
  from decreased expenditures.
Towards the close of the century children's magazines greatly decreased in
  number.
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