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

Other Words from exhaust


exhauster noun
exhaustibility \ ig-​ˌzȯ-​stə-​ˈbi-​lə-​tē How to pronounce exhaust (audio) \ noun
exhaustible \ ig-​ˈzȯ-​stə-​bəl How to pronounce exhaust (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.
Recent Examples on the Web: Verb Frequent false positives exhaust security teams and may delay response to legitimate ransomware alerts. Etay Maor, Forbes, 1 July 2022 Current stocks of the country will exhaust in just under a week based on regular demand, Reuters calculations show. Reuters, CNN, 27 June 2022 Sensory rest asks us to be aware of the external stimuli that exhaust us (Zoom calls, our phone screens) and to set firmer boundaries to avoid burnout. Alisha Acquaye, Allure, 12 June 2022 The Tigers are counting on Vest to pitch Wednesday, considering Tuesday's doubleheader at Comerica Park will exhaust the active members of the bullpen. Evan Petzold, Detroit Free Press, 31 May 2022 Those that lose the plot will exhaust workforces, clients and revenue — and will harm their brands while decelerating the economy’s revival at large. Somdutta Singh, Forbes, 5 May 2022 The move doesn’t exhaust the legal options for Assange, who has sought for years to avoid a trial in the U.S. on charges related to WikiLeaks’ publication of a huge trove of classified documents more than a decade ago. NBC News, 20 Apr. 2022 An employee need not exhaust the first bank of leave to access the second bank of leave. Dan Eaton, San Diego Union-Tribune, 28 Feb. 2022 Left in automatic mode while prowling the streets of Orange County, everything from ride quality to shift quality to exhaust note feels quite civilized. Karl Brauer, Forbes, 21 June 2022 Recent Examples on the Web: Noun First, the researchers put soot-like diesel exhaust particles in a drop of liquid to deliver to the lungs of pregnant mice. Akila Muthukumar, STAT, 7 Aug. 2022 Aikens flipped a switch, rerouting the exhaust to inflate the gargantuan tires, and the Sherp rolled to the edge of the river. Josh Condon, Robb Report, 6 Aug. 2022 Carbon monoxide, in tiny amounts, will exit through the exhaust vent. Heather Murphy, Chicago Tribune, 6 Aug. 2022 It’s strategies that reduce vehicle [exhaust] and air-conditioning waste to make buildings more efficient. ... Sarah Matusek, The Christian Science Monitor, 3 Aug. 2022 The pizza ovens’ exhaust hoods, which help direct smoke out of the building, also bring in hot air from the outside. New York Times, 29 July 2022 The Italian mods included a new Eaton supercharger, a more efficient intercooler, high-volume fuel injectors, a remapped ECU with a higher rev limit, and a sport exhaust. Clifford Atiyeh, Car and Driver, 29 July 2022 The greatest uncertainty is the potential behavior of contrails—the tendrils that form behind planes as water molecules condense around exhaust particles and freeze. Wired, 28 July 2022 In the event of an engine failure, engine oil and fuel vapor may be released into the engine compartment and accumulate near ignition sources such as hot engine or exhaust components, possibly resulting in an engine compartment fire. Detroit Free Press, 26 July 2022 See More

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.

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

Learn More About exhaust

Time Traveler for exhaust

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The first known use of exhaust was in 1531

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Statistics for exhaust

Last Updated

18 Jul 2022

Cite this Entry

“Exhaust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exhaust. Accessed 15 Aug. 2022.

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More Definitions for exhaust


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


transitive verb
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


transitive verb

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

More from Merriam-Webster on exhaust

Nglish: Translation of exhaust for Spanish Speakers

Britannica English: Translation of exhaust for Arabic Speakers

Britannica.com: Encyclopedia article about exhaust


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