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Fatigue vs Lassitude - What's the difference?

fatigue | lassitude |

As nouns the difference between fatigue and lassitude

is that fatigue is a weariness caused by exertion; exhaustion while lassitude is lethargy or lack of energy; fatigue.

As a verb fatigue

is to tire or make weary by physical or mental exertion.

fatigue

English

Noun

(en noun)
  • A weariness caused by exertion; exhaustion.
  • * {{quote-news
  • , year=2012 , date=December 29 , author=Paul Doyle , title=Arsenal's Theo Walcott hits hat-trick in thrilling victory over Newcastle , work=The Guardian citation , page= , passage=Alan Pardew finished by far the most frustrated man at the Emirates, blaming fatigue for the fact that Arsenal were able to kill his team off in the dying minutes.}}
  • A menial task, especially in the military.
  • (engineering) A mechanism of material failure involving of crack growth caused by low-stress cyclic loading.
  • * 2013 , N. Dowling, Mechanical Behaviour of Materials , page 399
  • Mechanical failures due to fatigue have been the subject of engineering efforts for more than 150 years.

    Synonyms

    *

    Derived terms

    * fatigues (military work clothing)

    Verb

    (fatigu)
  • to tire or make weary by physical or mental exertion
  • to lose so much strength or energy that one becomes tired, weary, feeble or exhausted
  • (intransitive, engineering, of a material specimen) to undergo the process of fatigue; to fail as a result of fatigue.
  • lassitude

    English

    Noun

    (en noun)
  • Lethargy or lack of energy; fatigue.
  • Listlessness or languor.
  • Quotations

    * 1874 , (Marcus Clarke), (For the Term of His Natural Life) Chapter VII *: Rufus Dawes, though his eyelids would scarcely keep open, and a terrible lassitude almost paralysed his limbs, eagerly drank in the whispered sentence. * 1919 , *: "Then it's No, darling?" he said at last. *: She gave a gesture of lassitude . She was exhausted. *: "The studio is yours. Everything belongs to you. If you want to bring him here, how can I prevent you?" * 2004 , "Is Slacking the Only Way to Survive the Office?," The Scotsman (Edinburgh), 16 Aug, *: In order to appear busy, one should pace around the office clutching files.... The best part of this ancient ritual is that it tends to make one's colleagues look away—just in case you and your papers are going to interrupt their own lassitude . * 2004 , Rob Hughes, "Soccer: The Olympic Flame Running Low on Fuel," International Herald Tribune (Paris), 11 Aug., *: At Euro 2004 and the 2002 World Cup, Blatter commented this week, many stars were physically and mentally exhausted, and left an aftertaste of nonchalance and lassitude .''