What does "exhaust" mean?

1. (to tire out) to make someone feel extremely tired or without any energy. 2. (to use up) to use all of something so that nothing is left. 3. (to discuss fully) to talk about a subject so thoroughly that there is nothing left to say. 4. (waste gas) the waste gas that comes out of a car or engine while it is working. 5. (engine pipe) the pipe or system that carries waste gas away from an engine.

Is it correct to say "The long walk was very exhausted."?

No — say "The long walk was very exhausting.". Use 'exhausting' to describe the thing that makes you tired, and 'exhausted' to describe how you feel.

exhaust

v. · n.

US //ɪɡˈzɔst// UK //ɛɡzˈɔːst// ex·haust

1 to tire out (v.)
B1 Intermediate

to make someone feel extremely tired or without any energy.

to fatigue or wear out a person completely. Transitive — requires a direct object.

Example

The long climb up the mountain will exhaust even the fittest hikers.

Example

The relentless pace of the project threatened to exhaust the entire design team before the final deadline was even in sight.
- tire
- wear out
- drain
- energize
- refresh
Pitfall

The long walk was very exhausted.

The long walk was very exhausting.

Use 'exhausting' to describe the thing that makes you tired, and 'exhausted' to describe how you feel.
2 to use up (v.)
B2 Upper Intermediate

to use all of something so that nothing is left.

to deplete a supply or resource entirely; to expend wholly.

Example

We have exhausted our food supplies and need to find a shop.

Example

By the third month of the drought, the village had exhausted its water reserves and was forced to rely on emergency shipments.
- deplete
- consume
- drain
- replenish
- save

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3 to discuss fully (v.)
C1 Advanced Formal

to talk about a subject so thoroughly that there is nothing left to say.

to treat or study a subject matter so comprehensively that no further discussion is possible.

Example

I think we have exhausted this topic, so let's move to the next item.

Example

The committee felt they had exhausted every possible legal avenue before finally deciding to drop the lawsuit.
- finish
- complete
4 waste gas (n.)
B1 Intermediate

the waste gas that comes out of a car or engine while it is working.

the waste gases or steam expelled from an engine as a byproduct of combustion.

Example

The old bus produced a cloud of black exhaust as it pulled away.

Example

Environmental regulations have become increasingly strict regarding the levels of toxic chemicals permitted in vehicle exhaust.
- fumes
- emissions
5 engine pipe (n.)
B2 Upper Intermediate

the pipe or system that carries waste gas away from an engine.

the mechanical system, including the manifold and tailpipe, through which spent fuel is discharged.

Example

He noticed a loud rattling noise coming from the car's exhaust.

Example

The mechanic suggested replacing the entire exhaust after discovering significant corrosion near the muffler.
- exhaust pipe
- tailpipe

Origin

From Latin exhaustus, past participle of exhaurīre (“to draw out, drink up, empty, exhaust”), from ex (“out”) + haurīre (“to draw (especially water), drain”).