fatigue - definition and synonyms

 
noun [uncountable] 

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/fəˈtiːɡ/
  1. 1
    a feeling of being extremely tired, either physically or mentally

    A child’s sleep problems cause parents fatigue and unnecessary guilt.

    1. a.
      the feeling that you have done a particular activity for so long that you no longer want to do it

      Too many requests for aid can cause compassion fatigue.