exhaust

v. to make someone feel extremely tired or without any energy.

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

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

“The relentless pace of the project threatened to exhaust the entire design team before the final deadline was even in sight.”

v. to use all of something so that nothing is left.

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

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

“By the third month of the drought, the village had exhausted its water reserves and was forced to rely on emergency shipments.”

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

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

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

“The committee felt they had exhausted every possible legal avenue before finally deciding to drop the lawsuit.”

Formal

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

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

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

“Environmental regulations have become increasingly strict regarding the levels of toxic chemicals permitted in vehicle exhaust.”

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

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

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

“The mechanic suggested replacing the entire exhaust after discovering significant corrosion near the muffler.”