Etymology

delirious

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Today it means: Being in the state of delirium. Full definition →

Latin delirus
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The story

  1. Latin · derived fromdelirus“silly, doting, crazy”
  2. English todaydelirious

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

Etymology from Wiktionary, CC BY-SA 4.0.