Etymology

adulthood

A1D2U1L1T1H4O1O1D2

Today it means: The state or condition, for humans and other animals, of physical and psychological maturity: being an adult. Full definition →

Proto-Germanic *haiduz ← Proto-Indo-European *keyt- ← English adult
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The story

  1. Proto-Indo-European*h₂éd
  2. Proto-Italic*ad
  3. Proto-Italic*ad-
  4. Latinad-
  5. Proto-Indo-European*h₂el-
  6. Proto-Indo-European*h₂oléyeti
  7. Proto-Italic*oleō
  8. Latin*oleō
  9. Latinolēscō
  10. Latinadolēscō
  11. Latinadultu
  12. Frenchadulte
  13. Englishadult
  14. Proto-Indo-European*keyt-
  15. Proto-Germanic*haiduz
  16. English todayadulthood

From adult + -hood.

Etymology from Wiktionary, CC BY-SA 4.0.