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From delirium +‎ -ous; see also Latin delirus (silly, doting, crazy).


  • (UK) IPA(key): /dɪˈlɪɹɪ.əs/, /dɪˈlɪəɹɪ.əs/
  • (file)
  • Rhymes: -ɪəɹiəs


delirious (comparative more delirious, superlative most delirious)

  1. (medicine) Being in the state of delirium.
    • 1850, [Alfred, Lord Tennyson], In Memoriam, London: Edward Moxon, [], →OCLC, Canto XVI, page 26:
      ⁠Or has the shock, so harshly given,
      […] made me that delirious man
      ⁠Whose fancy fuses old and new,
      ⁠And flashes into false and true,
      And mingles all without a plan?
    • 1872, Simon Mohler Landis, The Social War, Chapter III: Deacon Stew raves at Lucinda's Love for Victor:
      [] the angelic form of a creature whose very existence was a gigantic balm of Gilead to the lacerated body of our hero, and, in a half delirious state of mind, he felt like leaping mountains to raise prostrate female forms, and to become blessed with hymeneal joys of the most glorious character; but, his imagination soon forsook him, and a raging fever, accompanied by the most violent deadly delirium, ensued, which lasted a fortnight.
  2. Having uncontrolled excitement; ecstatic.

Derived terms[edit]


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