A dungeon is a dank and dark place where prisoners are kept. It is commonly associated with a place of confinement, torture, and punishment. There are many synonyms for the word dungeon that express similar ideas. Some of the most commonly used synonyms are jail, gaol, lockup, prison, confinement, cell, and penitentiary. Dungeon often implies an underground room, so words like catacomb, crypt, and tomb can also be used in certain contexts. Other words that may be associated with a dungeon are pit, hole, and chamber. These synonyms for dungeon give us different ways to describe a place of confinement and punishment.