fatigue

[fuh-teeg]
noun
1.
weariness from bodily or mental exertion.
2.
a cause of weariness; slow ordeal; exertion: the fatigue of driving for many hours.
3.
Physiology. temporary diminution of the irritability or functioning of organs, tissues, or cells after excessive exertion or stimulation.
4.
Civil Engineering. the weakening or breakdown of material subjected to stress, especially a repeated series of stresses.
5.
Also called fatigue duty. Military.
a.
labor of a generally nonmilitary kind done by soldiers, such as cleaning up an area, digging drainage ditches, or raking leaves.
b.
the state of being engaged in such labor: on fatigue.
6.
fatigues, Military, fatigue clothes.
adjective
7.
of or pertaining to fatigues or any clothing made to resemble them: The guerrilla band wore fatigue pants and field jackets. She brought fatigue shorts to wear on the hike.
verb (used with object), fatigued, fatiguing.
8.
to weary with bodily or mental exertion; exhaust the strength of: Endless chatter fatigues me.
9.
Civil Engineering. to subject (a material) to fatigue.
verb (used without object), fatigued, fatiguing.
10.
to become fatigued.
11.
Civil Engineering. (of a material) to undergo fatigue.

Origin:
1685–95; < French fatigue (noun), fatiguer (v.) < Latin fatīgāre to tire

fatigueless, adjective
fatiguingly, adverb
antifatigue, adjective
unfatiguing, adjective


8. tire, debilitate, enervate.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
fatigue (fəˈtiːɡ)
 
n
1.  physical or mental exhaustion due to exertion
2.  a tiring activity or effort
3.  physiol the temporary inability of an organ or part to respond to a stimulus because of overactivity
4.  the progressive cracking of a material subjected to alternating stresses, esp vibrations
5.  the temporary inability to respond to a situation or perform a function, because of overexposure or overactivity: compassion fatigue
6.  a.  any of the mainly domestic duties performed by military personnel, esp as a punishment
 b.  (as modifier): fatigue duties
7.  (pl) special clothing worn by military personnel to carry out such duties
 
vb , -tigues, -tiguing, -tigued
8.  to make or become weary or exhausted
9.  to crack or break (a material or part) by inducing fluctuating stresses in it, or (of a metal or part) to become weakened or fail as a result of fluctuating stresses
 
[C17: from French, from fatiguer to tire, from Latin fatīgāre]
 
fatigable
 
adj
 
fa'tigueless
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

fatigue
1660s, from Fr. fatigue "weariness," from fatiguer "to tire," from L. fatigare, originally "to cause to break down," later, "to tire out," from reconstructed adj. *fati-agos "driving to the point of breakdown," from Old Latin *fatis (of unknown origin, related to adv. affatim "sufficiently" and to fatisci
"crack, split") + root of agere "to drive" (see act). Related: Fatigued; fatiguing.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

fatigue fa·tigue (fə-tēg')
n.

  1. Physical or mental weariness resulting from exertion.

  2. A sensation of boredom and lassitude due to absence of stimulation, to monotony, or to lack of interest in one's surroundings.

  3. The decreased capacity or complete inability of an organism, an organ, or a part to function normally because of excessive stimulation or prolonged exertion.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Finishing the painting brought a sense of fatigue and let-down.
Not only are many colleges watching every penny, but sustainability directors
  are also suffering from green-ratings fatigue.
Your brain will undoubtedly get overloaded from fatigue as well as cognitive
  demands.
Now you can see their fatigue, and they're ready to sleep.
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