verb

make (someone) feel very tired.

her day out had exhausted her

tire out,wear out,overtire,overtax,fatigue,weary,tire,drain,run someone into the ground,run someone ragged,enervate,sap,debilitate,prostrate,enfeeble,wear oneself to a shadow,do in,take it out of one,wipe out,fag out,knock out,shatter,wear oneself to a frazzle,frazzle,nearly kill,knacker,poop,tucker out,root,tiring,wearying,taxing,fatiguing,wearing,enervating,draining,sapping,debilitating,arduous,strenuous,uphill,onerous,punishing,demanding,exacting,burdensome,gruelling,back-breaking,crushing,crippling,killing,murderous,hellish,knackering,exigent

noun

waste gases or air expelled from an engine, turbine, or other machine in the course of its operation.

buses spewing out black clouds of exhaust