Etymology

delusional

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Today it means: Suffering from delusions; having false or faulty beliefs. Full definition →

Proto-Indo-European *h₂élisder.? ← English delusion ← Latin dēlūsiō
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The story

  1. Proto-Indo-European*de
  2. Proto-Indo-European*déh₁
  3. Proto-Italic*dē
  4. Latindē
  5. Latindē-
  6. Latinlūdō
  7. Latindēlūdō
  8. Latindēlūsiō
  9. Englishdelusion
  10. Proto-Indo-European*h₂el-
  11. Proto-Indo-European*h₂élisder.?
  12. English todaydelusional

From delusion + -al.

Etymology from Wiktionary, CC BY-SA 4.0.