exhaust

American  

[ig-zawst] / ɪgˈzɔst /

verb (used with object)

1. to drain of strength or energy, wear out, or fatigue greatly, as a person.

   I have exhausted myself working.

   Synonyms:

   debilitate, prostrate, enervate, tire

   Antonyms:

   invigorate, strengthen

2. to use up or consume completely; expend the whole of.

   He exhausted a fortune in stock-market speculation.

   Synonyms:

   dissipate, squander, waste

3. to draw out all that is essential in (a subject, topic, etc.); treat or study thoroughly.

4. to empty by drawing out the contents.

   to exhaust a tank of fuel oil.

   Synonyms:

   void

   Antonyms:

   fill

5. to create a vacuum in.

6. to draw out or drain off completely.

7. to deprive wholly of useful or essential properties, possessions, resources, etc.

8. Chemistry, Pharmacology. to deprive of ingredients by the use of solvents, as a drug.

9. to destroy the fertility of (soil), as by intensive cultivation.

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verb (used without object)

1. to pass out or escape, as spent steam from the cylinder of an engine.

noun

Machinery.

1. the escape of steam or gases from the cylinder of an engine.

2. the steam or gases ejected.

   Synonyms:

   vapor, smoke, fume

3. Also called exhaust system.  the parts of an engine through which the exhaust is ejected.

exhaust British  

/ ɪɡˈzɔːst /

verb

1. to drain the energy of; tire out

   to exhaust someone by constant questioning

2. to deprive of resources, etc

   a nation exhausted by war

3. to deplete totally; expend; consume

   to exhaust food supplies

4. to empty (a container) by drawing off or pumping out (the contents)

5. to develop or discuss thoroughly so that no further interest remains

   to exhaust a topic of conversation

6. to remove gas from (a vessel, etc) in order to reduce the pressure or create a vacuum; evacuate

7. to remove or use up the active ingredients from (a drug, solution, etc)

8. to destroy the fertility of (soil) by excessive cultivation

9. (intr) (of steam or other gases) to be emitted or to escape from an engine after being expanded

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noun

1. gases ejected from an engine as waste products

2. 1. the expulsion of expanded gas or steam from an engine

   2. ( as modifier )

      exhaust stroke

3. 1. the parts of an engine through which the exhausted gases or steam pass

   2. ( as modifier )

      exhaust valve

      exhaust pipe

Other Word Forms

• exhausted adjective
• exhauster noun
• exhaustibility noun
• exhaustible adjective
• exhausting adjective
• multiexhaust noun
• nonexhausted adjective
• nonexhaustible adjective
• preexhaust verb (used with object)
• unexhausted adjective
• unexhaustedly adverb

Etymology

Origin of exhaust

1515–25; 1895–1900 exhaust for def. 11; < Latin exhaustus emptied out, drained out, past participle of exhaurīre

Example Sentences

The book’s passages spiral out from the exhausted major’s days in the Arabian Desert to traverse the duration of his lengthy and accomplished military career.

From The Wall Street Journal

I wish I could say that was the only time I chased virtue and optimization until I crashed out hard — exhausted, confused and disconnected from my own hunger — but it wasn’t.

From Salon

The Congressional Budget Office released a report last month estimating that the Old-Age and Survivors Insurance Trust Fund will be exhausted in 2032.

From MarketWatch

"I feel like I have to work much harder to prove myself, which can be challenging and it also can be exhausting," she explains.

From BBC

The study found that switching off just two genes can restore the ability of exhausted T cells to attack tumors.

From Science Daily

Related Words

• drain
• fatigue
• frazzle
• impoverish
• overwork
• sap
• tire out
• use up
• weaken
• wear out
• weary