ex·​haust | \ ig-ˈzȯst How to pronounce exhaust (audio) \
exhausted; exhausting; exhausts

Definition of exhaust

 (Entry 1 of 2)

transitive verb

1a : to consume entirely : use up exhausted our funds in a week
b : to tire extremely or completely exhausted by overwork
c : to deprive of a valuable quality or constituent exhaust a soil of fertility
2a : to draw off or let out completely
b : to empty by drawing off the contents specifically : to create a vacuum in
3a : to consider or discuss (a subject) thoroughly or completely
b : to try out the whole number of exhausted all the possibilities

intransitive verb

: discharge, empty the engine exhausts through the muffler



Definition of exhaust (Entry 2 of 2)

1a : the escape of used gas or vapor from an engine
b : the gas or vapor thus escaping
2a : the conduit through which used gases escape
b : an arrangement for removing fumes, dusts, or odors from an enclosure

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Other Words from exhaust


exhauster noun
exhaustibility \ ig-​ˌzȯ-​stə-​ˈbi-​lə-​tē How to pronounce exhaustibility (audio) \ noun
exhaustible \ ig-​ˈzȯ-​stə-​bəl How to pronounce exhaustible (audio) \ adjective

Choose the Right Synonym for exhaust


deplete, drain, exhaust, impoverish, bankrupt mean to deprive of something essential to existence or potency. deplete implies a reduction in number or quantity so as to endanger the ability to function. depleting our natural resources drain implies a gradual withdrawal and ultimate deprivation of what is necessary to an existence. personal tragedy had drained him of all spirit exhaust stresses a complete emptying. her lecture exhausted the subject impoverish suggests a deprivation of something essential to richness or productiveness. impoverished soil bankrupt suggests impoverishment to the point of imminent collapse. war had bankrupted the nation of resources

tire, weary, fatigue, exhaust, jade mean to make or become unable or unwilling to continue. tire implies a draining of one's strength or patience. the long ride tired us out weary stresses tiring until one is unable to endure more of the same thing. wearied of the constant arguing fatigue suggests great lassitude from excessive strain or undue effort. fatigued by the day's chores exhaust implies complete draining of strength by hard exertion. shoveling snow exhausted him jade suggests the loss of all freshness and eagerness. appetites jaded by overindulgence

Examples of exhaust in a Sentence

Verb If they keep spending this way, they'll exhaust their savings. He can talk about baseball for hours and still feel that he hasn't exhausted the subject . Noun diesel exhaust from passing trucks There's a problem with the car's exhaust.
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Recent Examples on the Web: Verb Many businesses were unable to get loans before the initial funding was exhausted. Ryan W. Miller, USA TODAY, "Coronavirus live updates: Trump threatens to leave WHO and says he's taking unproven hydroxychloroquine; Missouri will execute a man," 19 May 2020 Presenting information from an anonymous source occurs extremely rarely, and only when that information is considered crucial and all other on-the-record options have been exhausted. Otis R. Taylor Jr., SFChronicle.com, "‘God has not abandoned us’: Recipients grateful for reader generosity," 18 May 2020 Hutchins was coming off of an epic, exhausting week at Defcon, one of the world's largest hacker conferences, where he had been celebrated as a hero. Andy Greenberg, Wired, "The Confessions of Marcus Hutchins, the Hacker Who Saved the Internet," 12 May 2020 While waiting out California’s stay-at-home order in March on his brother’s house boat near San Francisco, Rich Goldman exhausted his supply of cholesterol and blood-pressure drugs. Jared S. Hopkins, WSJ, "Mail-Order Drug Delivery Rises During Coronavirus Lockdowns," 12 May 2020 Banks get more dollars in reserve and are more prone to lend money without worrying about exhausting their funds because of a run on the bank in a time of panic. Brent Schrotenboer, USA Today, "The U.S. is `printing' money to help save the economy during COVID-19 crisis: How far can it go?," 12 May 2020 Launched in California on April 28, the PUA was aimed at helping business owners, gig workers and others who did not qualify for traditional unemployment or had exhausted their benefits. Los Angeles Times, "Unions praised coronavirus aid for Hollywood workers. Now they say it falls short for some," 8 May 2020 When that is exhausted, their future will be in jeopardy. The Economist, "Re-exclusion For microfinance lenders, covid-19 is an existential threat," 5 May 2020 How about the home game against Duke, when Grant probed the lane and had seemingly exhausted every option before eyeing Vasturia in the corner for a clinching 3. Tom Noie, Indianapolis Star, "Notre Dame basketball: 2015 Elite Eight team gathers from a distance," 4 May 2020 Recent Examples on the Web: Noun The woman, who looked underneath the Elantra, discovered a piece of the exhaust pipe was missing. John Benson, cleveland, "Man admits stealing E Cig from gas station: North Royalton Police Blotter," 6 May 2020 That is why your exhaust pipe gets too hot to touch, or why your desk tends to get more cluttered by the end of the day. Dennis Overbye, New York Times, "Just a Few Billion Years Left to Go," 4 Mar. 2020 Even though, of course, there are no strokes—no gas tank, no pistons, no exhaust pipe snaking up along the rear fender. Ezra Dyer, Popular Mechanics, "The Cake Kalk Is a Piece of Artwork You Can Ride," 26 Dec. 2019 The snow under the exhaust pipe was black, indicating that the car had idled for a while, Daniel said. oregonlive, "Friends of missing Hillsboro woman concerned after car found abandoned in southern Oregon," 23 Dec. 2019 Fires are sparked by downed power lines, campfires, mechanical equipment such as chainsaws, and even hot vehicle exhaust pipes touching dry grass. Matthew Brown And Christina Larson, SFChronicle.com, "As California thins forests to limit fire risk, some resist," 14 Dec. 2019 Fires are sparked by downed power lines, campfires, mechanical equipment such as chainsaws, and even hot vehicle exhaust pipes touching dry grass. Christina Larson, The Denver Post, "As California thins forests to limit fire risk, some homeowners resist," 13 Dec. 2019 Subaru said car dealerships will update the software and replace the coils and front exhaust pipes if needed. CBS News, "Subaru recalls 400,000 vehicles over engine control and valve defects," 24 Oct. 2019 Placing devices directly inside the exhaust pipes of certain diesel haulers so their data points can be recorded as part of a UC Riverside study will not likely be completed this hauling season, which ends in November. Sara Cardine, La Cañada Valley Sun, "With Devil’s Gate hauling set to resume, plans to test tailpipes progress," 25 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'exhaust.' 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 exhaust


1531, in the meaning defined at transitive sense 1a


1848, in the meaning defined at sense 1a

History and Etymology for exhaust


Latin exhaustus, past participle of exhaurire, from ex- + haurire to draw; akin to Middle High German œsen to empty, Greek auein to take

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Time Traveler for exhaust

Time Traveler

The first known use of exhaust was in 1531

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Statistics for exhaust

Last Updated

24 May 2020

Cite this Entry

“Exhaust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exhaust. Accessed 29 May. 2020.

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More Definitions for exhaust


How to pronounce exhaust (audio)

English Language Learners Definition of exhaust

 (Entry 1 of 2)

: to use all of someone's mental or physical energy : to tire out or wear out (someone) completely
: to completely use up (something, such as supplies or money)
: to try all of (something)



English Language Learners Definition of exhaust (Entry 2 of 2)

: the mixture of gases produced by an engine
: a pipe or system of pipes through which exhaust is released


ex·​haust | \ ig-ˈzȯst How to pronounce exhaust (audio) \
exhausted; exhausting

Kids Definition of exhaust

 (Entry 1 of 2)

1 : to tire out : fatigue Hard work will exhaust you.
2 : to use up completely We've exhausted our supplies.
3 : to try out all of We exhausted all options.



Kids Definition of exhaust (Entry 2 of 2)

1 : the gas that escapes from an engine
2 : a system of pipes through which exhaust escapes
ex·​haust | \ ig-ˈzȯst How to pronounce exhaust (audio) \

Medical Definition of exhaust

1a : to draw off or let out completely
b : to empty by drawing off the contents specifically : to create a vacuum in
2a : to use up : consume completely
b : to tire extremely or completely exhausted by overwork
3 : to extract completely with a solvent exhaust a drug with alcohol

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Legal Definition of exhaust

: to use up or consume entirely: as
a : to try all of (available remedies) the applicant has exhausted the remedies available in the courts of the StateU.S. Code
b : to bring (a claim) through all available prior levels of review each of his claims would now be exhausted— W. R. LaFave and J. H. Israel

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Comments on exhaust

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