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 Elsewhere, scammers are still stirring up trouble and captivating a public exhausted by the dismal news cycle. Rachel King, Fortune, "The 10 Best Business Books of 2019," 1 Dec. 2019 But Washington state is enforcing a net neutrality law, and states including California intend to do so in the future after all appeals are exhausted in a lawsuit over the FCC's repeal of net neutrality rules. Jon Brodkin, Ars Technica, "As DirecTV tanks, AT&T says it will “re-bundle” TV with HBO Max," 19 Nov. 2019 The stay likely makes Abbott’s decision moot until Reed’s appeals are exhausted. BostonGlobe.com, "HOUSTON — Texas’ top appeals court on Friday halted the scheduled execution of inmate Rodney Reed, whose conviction is being questioned by new evidence that his supporters say raises serious doubt about his guilt.," 16 Nov. 2019 The stay likely makes the governor's decision moot until Reed’s appeals are exhausted. Doug Stanglin, USA TODAY, "Texas appeals court halts execution of condemned man who many say is innocent," 16 Nov. 2019 After the obvious solutions are exhausted, the later ideas tend to be the most creative and effective. Josh Linkner, Detroit Free Press, "These 12 techniques will change brainstorming forever," 26 Oct. 2019 So when the land is exhausted, farmers would benefit from diversifying to products like rubber and palm oil. Michael E Odijie, Quartz Africa, "West Africa’s cocoa farmers are trapped by the global chocolate industry," 10 Oct. 2019 Defense stayed on field too long Because the offense could not muster any sort of consistent attack, South Alabama’s defense was totally exhausted by game’s end. Creg Stephenson | Cstephenson@al.com, al, "5 takeaways from South Alabama’s 20-17 loss to Georgia Southern," 5 Oct. 2019 Donald Trump may be all the rage for vocal bigots, but most of the country is exhausted by Sweet Potato Saddam’s incessant need to suck the air out of the room. Michael Arceneaux, Essence, "Opinion: There Is No Reason To Fear Impeachment, Beloveds," 1 Oct. 2019 Recent Examples on the Web: Noun The visuals were enhanced by wind from a fan and by odors of car exhaust. Patricia Marx, The New Yorker, "Taking Virtual Reality for a Test Drive," 2 Dec. 2019 Belching jets of fiery exhaust, the big abort engines shut down as planned at the end of that five seconds, followed by the maneuvering thrusters about five seconds after that. William Harwood, CBS News, "Boeing Starliner capsule blasts off in dramatic abort test," 4 Nov. 2019 Dealers will update software and replace coils and front exhaust pipes if needed. BostonGlobe.com, "Amazon profit plunges with its quicker delivery plan," 25 Oct. 2019 Is there music more beautiful to the ears, while driving, than the burble coming from the exhaust pipes? Los Angeles Times, "Lamborghini’s 2020 Huracan EVO is a hell of a ride, but maybe not a daily driver," 11 Oct. 2019 Sadauskis said the windows of the car were closed and a hose was running from the exhaust pipe to a window. Emily Cutts, Twin Cities, "Rochester mother accused of attempting to asphyxiate herself, 5 children," 10 Oct. 2019 By sharing rides, parents can reduce vehicle traffic and congestion, cutting the amount of exhaust emitted on the road, and at drop-off and pickup lines at campuses. Deborah Sullivan Brennan, San Diego Union-Tribune, "The city of Carlsbad launches “Cool Rides” school carpool program," 6 Sep. 2019 Tourists have been spooked by the realization that one passenger's share of the exhaust from a single flight can cancel out a year's worth of Earth-friendly efforts. Michael Birnbaum, chicagotribune.com, "Europe’s flight-shame movement has travelers taking trains to save the planet," 20 Aug. 2019 This in turn requires the submarine to surface, or at the very least snorkel, which exposes the periscope, an air intake, and an exhaust port above the surface of the water. Kyle Mizokami, Popular Mechanics, "Introducing Japan's Lithium Ion Battery-Powered Submarine," 14 Nov. 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

7 Dec 2019

Cite this Entry

“Exhaust.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/exhaust?show=0&t=1361186507. Accessed 9 December 2019.

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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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