Etymology

dungeon

D2U1N1G2E1O1N1

Today it means: An underground prison or vault, typically built underneath a castle. Full definition →

Middle English dongeoun ← Anglo-Norman donjun ← Old French donjon
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The story

  1. Old English · derived fromdung“underground prison cell”
  2. Latin · derived fromdominus“master, lord”
  3. Vulgar Latin · derived from*dominiōnem
  4. Old French · derived fromdonjon“keep of a castle”
  5. Anglo-Norman · derived fromdonjun“keep of a castle; keep used as a prison; dungeon”
  6. Middle English · inherited fromdongeoun“keep of a castle; dungeon; abyss, cave, den; whirlpool”
  7. English todaydungeon

From Middle English dongeoun (“keep of a castle; dungeon; abyss, cave, den; whirlpool”), from Anglo-Norman donjun (“keep of a castle; keep used as a prison; dungeon”) and continental Old French donjon (“keep of a castle”), from Vulgar Latin *dominiōnem, seemingly derived from Latin dominus (“master, lord”) perhaps via some figurative sense like “dominant building”. Doublet of donjon. The sense of “prison (associated with a castle)”, first attested in Anglo-Norman (13th c.) and apparently never in continental Old French, likely developed in combination with Old English dung (“underground prison cell”), whence Middle English donge (“pit, abyss”, senses that are also attested for Middle English dongeoun). The game term has been popularized by Dungeons & Dragons.

Words from the same roots

Old Frenchdonjon all →

Latindominus all →

dolorddandondominusdominedonzel

Old Englishdung all →

dungdingleDungworth

Etymology from Wiktionary, CC BY-SA 4.0.