Mathematics. (of a function) having the property that for any two points in the domain such that one is larger than the other, the image of the larger point is less than or equal to the image of the smaller point; nonincreasing.Compare increasing (def. 2).
Origin of decreasing
Middle English word dating back to 1350–1400; see origin at decrease, -ing2
That things like miniaturization and decreasing costs have democratized the ability of individuals or rogue nations to create harm on powerful countries.
Speak Softly and Carry Big Data (Ep. 395)|Stephen J. Dubner|October 31, 2019|Freakonomics
Actual cases of Ebola in Liberia, according the World Health Organization, are decreasing.
The WHO’s Big Asterisk on Liberia’s Ebola Case Decrease|Abby Haglage|October 31, 2014|DAILY BEAST
The glaciers are melting because snowfall is decreasing and temperatures are rising—bad news for wolverines.
Who Will Save the Wolverine? Not the U.S. Fish and Wildlife Service|Doug Peacock|July 20, 2014|DAILY BEAST
In an effort to save taxpayer dollars, states have been decreasing the number of beds in their psychiatric hospitals for decades.
U.S. Prisons Becoming De Facto Home of the Mentally Ill|Abby Haglage|April 10, 2014|DAILY BEAST
State funding for public colleges and universities has plummeted, decreasing by 40 percent across the country since 1980.
The Price of College Has Increased 1120 Percent Since 1978, So Is It Worth It?|Andrew Rossi|January 24, 2014|DAILY BEAST
The increasing reliance on numbers has been accompanied by a decreasing reliance on true leadership.
VMAs Red Carpet in Brooklyn Wouldn’t Have Been Possible Without NYPD|Michael Daly|August 27, 2013|DAILY BEAST
It did not trouble him much that his decreasing sum of money did not allow of such extravagance.
Sister Carrie|Theodore Dreiser
"Decima is sure to be at some work or other for Jan," was the answer, the asperity of Lady Verner's tone not decreasing.
Verner's Pride|Mrs. Henry Wood
The present rent is worth most, next year's less, and so on in a decreasing series.
The Principles of Economics|Frank A. Fetter
I have found these islands in need of men, whose numbers are decreasing because of the poor climate.
The Philippine Islands, 1493-1898, Volume XXIV, 1630-34|Various
The export of fungus is now decreasing, owing to the fall in price.