acedia

/əˈsiːdiə/
noun
  1. A state of spiritual or mental sloth, apathy, or lack of motivation, often accompanied by boredom or listlessness.
    • After weeks of isolation, he fell into a deep acedia and stopped caring about his work.
    • Modern life can sometimes lead to acedia, where nothing seems worth the effort.
    • The monk struggled with acedia, finding it hard to pray or focus on his duties.
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