Newgate is a term that refers to the famous prison in London that was operational from the 12th century until 1902. If you are looking for alternative words to use instead of Newgate, there are several options to choose from. For example, you could use the term prison, gaol, or jail, all of which convey the same meaning as Newgate. Other similar words include penitentiary, lockup, and clink. For a more archaic term, you could use dungeon, which was commonly used to describe a prison in the past. No matter which word you choose, the meaning remains the same - a place where criminals are detained and punished for their crimes.