Delirium

//dɪˈlɪ.ɹi.əm// noun

Definitions

Noun
  1. 1
    A temporary mental state with a sudden onset, usually reversible, including symptoms of confusion, inability to concentrate, disorientation, anxiety, and sometimes hallucinations. Causes can include dehydration, drug intoxication, and severe infection. countable, uncountable

    "The popular delirium [of the French Revolution] at first caught his enthusiastic mind."

  2. 2
    a usually brief state of excitement and mental confusion often accompanied by hallucinations wordnet
  3. 3
    Wild, frenzied excitement or ecstasy. countable, uncountable
  4. 4
    state of violent mental agitation wordnet

Etymology

Borrowed from Latin dēlīrium (“derangement, madness”).

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