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dungeon

/ˈdʌn.dʒən/

Castle keep or underground prison cell

From Latin dominus (master).

noun
noun
verb
dominionem / dominus
Latin
Verified
dominus
“master, lord”; especially the master of a castle

from Latin dominus "master" (of the castle)

+1 more source
Late Latin
Verified
dominium
“lordship, property, authority”; associated with a lord’s commanding building

from Late Latin dominium

Vulgar Latin
Verified
*dominiōnem
reconstructed
Reconstructed descendant meaning a dominant or lordly structure

from Vulgar Latin *dominiōnem, seemingly derived

Old French / Anglo-Norman
Verified
donjon
“great tower of a castle; keep”; the source of English dungeon

from Old French donjon "great tower of a castle" (12c.)

Modern English
dungeon

Picture a medieval castle from below: above, the lord’s tower rises over the landscape; below, prisoners sit in darkness. The word began with the upper half of that picture, not the lower one. Latin dominus meant “master” or “lord,” and its descendant dominium referred to lordship or possession; in Old French, donjon was the castle’s great central tower, the building that visibly announced who was in charge. English speakers gradually connected that keep with confinement, producing the prison sense by the early fourteenth century. Wiktionary records a competing possibility: Anglo-Norman donjun may have blended with Old English dung, “an underground cell” or “pit,” helping pull the word downward. So a dungeon is linguistically a lord’s house that took an elevator into the cellar—and every fantasy game still preserves that strange journey from commanding tower to monster-filled underground maze.

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