exhaust

The noun exhaust refers to what comes out of your car's tailpipe. It consists of the burned gases and particulate matter that are created by the engine. As a verb, the word exhaust means to use something up, such as a food supply or your energy.

The exhaust system in your car is the part that takes the waste created by the car in the form of gas or smoke and expels it through the tailpipe. The noun exhaust appeared in the 19th century, after the invention of the engine. Before that, the word, as a verb, referred only to depleting something, such as a natural resource. Miners deplete a mineral deposit and exhaust the resource.

Primary Meanings of exhaust

1.
v
wear out completely
2.
v
use up (resources or materials)
3.
nv
gases ejected from an engine as waste products
eliminate (a substance)
Full Definitions of exhaust
1

v wear out completely

“This kind of work exhausts me”
Synonyms:
beat, tucker, tucker out, wash up
Types:
frazzle
exhaust physically or emotionally
play
exhaust by allowing to pull on the line
kill
tire out completely
Type of:
fag, fag out, fatigue, jade, outwear, tire, tire out, wear, wear down, wear out, wear upon, weary
exhaust or get tired through overuse or great strain or stress
2

v use up (resources or materials)

“We exhausted our savings”
Synonyms:
consume, deplete, eat, eat up, run through, use up, wipe out
occupy, take, use up
require (time or space)
Types:
show 9 types...
hide 9 types...
run out
exhaust the supply of
drain
deplete of resources
indulge, luxuriate
enjoy to excess
burn, burn off, burn up
use up (energy)
spend
spend completely
play out, run down, sap, tire
deplete
surfeit
indulge (one's appetite) to satiety
overspend
spend more than available of (a budget)
underspend
spend less than the whole of (a budget, for example)
Type of:
drop, expend, spend
pay out

v use up the whole supply of

“We have exhausted the food supplies”
Type of:
empty
make void or empty of contents

v deplete

exhaust one's savings”
Synonyms:
play out, run down, sap, tire
play out
become spent or exhausted
Type of:
consume, deplete, eat, eat up, run through, use up, wipe out
use up (resources or materials)
3

n gases ejected from an engine as waste products

Synonyms:
exhaust fumes, fumes
Type of:
waste, waste material, waste matter, waste product
any materials unused and rejected as worthless or unwanted
gas
a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely

n system consisting of the parts of an engine through which burned gases or steam are discharged

Synonyms:
exhaust system
Type of:
system
instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity

v eliminate (a substance)

“combustion products are exhausted in the engine”
Synonyms:
discharge, eject, expel, release
Types:
show 24 types...
hide 24 types...
cough out, cough up, expectorate, spit out, spit up
discharge (phlegm or sputum) from the lungs and out of the mouth
blow
free of obstruction by blowing air through
abort
terminate a pregnancy by undergoing an abortion
ovulate
produce and discharge eggs
egest, eliminate, excrete, pass
eliminate from the body
bleed, hemorrhage, shed blood
lose blood from one's body
eruct, spew, spew out
eject or send out in large quantities, also metaphorical
fester, maturate, suppurate
ripen and generate pus
breathe, emit, pass off
expel (gases or odors)
belch, bubble, burp, eruct
expel gas from the stomach
force out
emit or cause to move with force of effort
emanate, exhale, give forth
give out (breath or an odor)
cough
exhale abruptly, as when one has a chest cold or congestion
miscarry
suffer a miscarriage
flow, menstruate
undergo menstruation
perspire, sudate, sweat
excrete perspiration through the pores in the skin
exudate, exude, ooze, ooze out, transude
release (a liquid) in drops or small quantities
urinate
pass after the manner of urine
empty, evacuate, void
excrete or discharge from the body
ca-ca, crap, defecate, make, stool, take a crap
have a bowel movement
ptyalise, ptyalize, spew, spit, spue
expel or eject (saliva or phlegm or sputum) from the mouth
spit out, splutter, sputter
spit up in an explosive manner
radiate
send out real or metaphoric rays
bubble
form, produce, or emit bubbles

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.