Definition of fatigue in English:

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Pronunciation: /fəˈtēɡ/


1Extreme tiredness, typically resulting from mental or physical exertion or illness: he was nearly dead with fatigue
More example sentences
  • But a critical distinction needs to be drawn between physical and mental fatigue.
  • Even so, the job saps the vitality, and a referee gets mental fatigue as well as physical.
  • This can cause a person to experience physical fatigue, along with mental fogginess, difficulty in concentrating, and dullness of the mind.
tiredness, weariness, sleepiness, drowsiness, exhaustion, enervation, languor, lethargy, torpor, prostration;
1.1A reduction in the efficiency of a muscle or organ after prolonged activity.
Example sentences
  • The frequency of frank respiratory muscle fatigue in acute asthma is unknown, but is probably low.
  • Thus, in patients with severe airway obstruction, inspiratory muscle fatigue may limit exercise performance.
  • A key problem in many patients with respiratory failure requiring intubation is fatigue of respiratory muscles.
1.2Weakness in materials, especially metal, caused by repeated variations of stress: metal fatigue
More example sentences
  • Metal fatigue is one concern, damage incurred during liftoff is another.
  • The fatigue properties of metals are quite structure-sensitive.
  • Investigators said the fatigue cracks on the planes that crashed were confined to the wing structures.
1.3 [with modifier] A lessening in one’s response to or enthusiasm for something, typically as a result of overexposure to it: museum fatigue
More example sentences
  • He revealed a bit of fundraiser fatigue in response.
  • Even now a certain amount of election fatigue is beginning to set in.
  • The Museo de las Culturas de Oaxaca is in a former monastery and a wander around the airy cloisters or in the excellent cacti garden offer a respite from any cases of museum fatigue.
2 (also fatigue detail) A group of soldiers ordered to perform menial, nonmilitary tasks, sometimes as a punishment.
2.1 (fatigues) Loose-fitting clothing, typically khaki, olive drab, or camouflaged, worn by soldiers: battle fatigues
More example sentences
  • Soldiers in camouflage fatigues and painted faces also carried heavy artillery to provide protective fire power in the event of a genuine security threat.
  • She looked Indian, and had on green camouflage fatigues.
  • Seated next to me in the lounge was a group of soldiers dressed in battle fatigues.

verb (fatigues, fatiguing, fatigued)

[with object] (often be fatigued)
1Cause (someone) to feel tired or exhausted: they were fatigued by their journey
More example sentences
  • A headache like that can really fatigue a person.
  • There are other categories, but it fatigues me to list them.
  • He was working nonstop and he was very fatigued.
tire (out), exhaust, wear out, drain, weary, wash out, overtire, prostrate, enervate
informal knock out, take it out of, do in, poop, bush, wear to a frazzle
1.1Reduce the efficiency of (a muscle or organ) by prolonged activity.
Example sentences
  • In mild cases it may be necessary to fatigue the symptomatic muscle.
  • Whereas only 1 of the 12 patients fatigued their quadriceps after an ISW, two thirds of the same patients did so after incremental cycling.
  • My only concern is that you find the ideal weight/rep combination that allows you to optimally fatigue the target muscle in the shortest time.
1.2Weaken (a material, especially metal) by repeated variations of stress.
Example sentences
  • Repeated stretching and sizing fatigues the brass to the point where it will eventually split, but I restrict things a little more.
  • For carbon forks in general, there should not be any limited life span, as carbon composites themselves are not subject to fatigue failures as metals are.
  • Given the thin faces of today's drivers, how long does a driver last before the metal becomes fatigued?



Pronunciation: /fəˌtēɡəˈbilitē/
Example sentences
  • He adds that prolonged noise increases fatiguability - the tendency to get tired easily.
  • His sleep is variable, but he has loss of energy and fatiguability.
  • Physical activity, leg muscle fatigability, calf muscle flexibility, and leg volume also were measured at the start of the study.


adjective (also fatigable)
Example sentences
  • As any jackhammer repairwoman can attest, the ears are as fatigable as any other major part of the face or head (and considerably more so than noses or hair).
  • In this instance it has a characteristic ‘fatiguable’ quality, in which the more the muscle is used the weaker it becomes.
  • In conclusion, the quadriceps in patients with severe chronic obstructive pulmonary disease are more fatigable than those in age- and sex-matched healthy control subjects.


Mid 17th century (in the sense 'task or duty that causes weariness'): from French fatigue (noun), fatiguer (verb), from Latin fatigare 'tire out', from ad fatim, affatim 'to satiety or surfeit, to bursting'.

  • The early use of the word was to mean ‘a task or duty causing weariness’; this is seen in the military use of the plural fatigues, duties sometimes allocated as a punishment. It comes via French from Latin fatigare ‘tire out’. The opposite is found in indefatigable (early 17th century).

Words that rhyme with fatigue

Grieg, intrigue, league, renege

For editors and proofreaders

Syllabification: fa·tigue

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