out·​flow | \ˈau̇t-ˌflō, ˌau̇t-ˈflō\
outflowed; outflowing; outflows

Definition of outflow 

(Entry 1 of 2)

intransitive verb

: to flow out


out·​flow | \ˈau̇t-ˌflō \

Definition of outflow (Entry 2 of 2)

1 : a flowing out the outflow of dollars

2 : something that flows out outflow of a sewage treatment plant

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Synonyms & Antonyms for outflow

Synonyms: Noun

exodus, gush, outpour, outpouring

Antonyms: Noun

flux, inflow, influx, inrush

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Examples of outflow in a Sentence


We joined the outflow of fans from the stadium after the game. The vents provide improved outflow of air.

Recent Examples on the Web: Verb

Heavy rains routinely overload Baltimore’s aged sewer system, sending human waste out of manholes and outflows that pour directly into the Jones Falls. Scott Dance, baltimoresun.com, "Weekend rain washes 10 million gallons of sewage-contaminated water into Baltimore's Jones Falls," 30 May 2018 The dam outflows below Wheeler and Wilson dams continue to produce some lunker smallmouths, with a fish over 8 pounds reported last week along with lots in the 4 to 5 pound class. Frank Sargeant, AL.com, "Friday Fishing Report," 30 Mar. 2018 And that doesn't account for the currents and outflowing tides that impeded him. Jon Wertheim, SI.com, "Sea of Dreams: How William Wrigley Jr. brought the Wrigley Ocean Marathon to life," 23 June 2017

Recent Examples on the Web: Noun

The rupee has fallen 16% since January on higher oil prices and an outflow of funds. Rajesh Roy, WSJ, "India’s Government Loses Patience With Central Bank," 31 Oct. 2018 Among the most important things investors are watching out for is whether Turkey, in an effort to stymie the outflow of capital from the country, puts limits on money flows. Suzan Fraser, The Seattle Times, "Turkey tries to contain crisis but currency keeps falling," 14 Aug. 2018 With exports faltering and stocks suffering outflows, officials are banking on remittances to help stabilize the peso, Asia’s worst-performing currency this year. Bloomberg.com, "New Destinations for Philippine Workers Are Russia, China," 23 Apr. 2018 Thunderstorms erupted along a southbound cold front during the late afternoon, sending cool storm outflow across the metro area. Tom Skilling, chicagotribune.com, "Storms, cold front bring relief from heat wave," 19 June 2018 The exodus is broad and deep — an outflow of doctors, engineers, oil workers, bus drivers and electricians. Anthony Faiola And Rachelle Krygier, Washington Post, "A historic exodus is leaving Venezuela without teachers, doctors and electricians," 3 June 2018 Competitiveness has become a hot topic in corporate Canada, following U.S. President Donald Trump’s tax cuts, difficulties getting Canadian products to markets amid pipeline bottlenecks, and concerns about capital outflows. Doug Alexander, Bloomberg.com, "Canada Must Do More to Ensure Competitive Edge, RBC CEO Says," 6 Apr. 2018 But the city’s initial plan left the largest outflow untouched, until residents, environmentalists and downstream state legislators raised an outcry. Patricia Sullivan, Washington Post, "Virginia regulators approve Alexandria sewer repair plan," 2 July 2018 Jitters leading to capital outflows could threaten a financial crisis. The Economist, "In its trade war with America, China dials down the hype," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'outflow.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of outflow


before the 12th century, in the meaning defined above


1785, in the meaning defined at sense 1

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Time Traveler for outflow

The first known use of outflow was before the 12th century

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More Definitions for outflow



English Language Learners Definition of outflow

: an outward flow or movement of something

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Comments on outflow

What made you want to look up outflow? Please tell us where you read or heard it (including the quote, if possible).


noxious or harmful

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