Lock up
Lock up verb - To put in or as if in prison.
Prison and lock up are semantically related. in incarcerate topic. In some cases you can use "Prison" instead the word "Lock up" as a verb or a noun.
Mutual synonyms
Both terms in one sentence
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They're allowed to lock up any student caught breaking those rules in the school's fully functional prison that they run with almost no supervision from the school facility.
Source: Manga / Prison School - Lock Up was originally a prequel to First Blood detailing Rambo's time in prison.
Source: Divorced Installment - Lock Up: In the climax, Frank Leone takes the evil Warden Drumgoole hostage and throws him into the reactivated electric chair in the prison's defunct death row section.
Source: Dead Man Switch
Cite this Source
Prison and Lock up. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/lock_up/prison
Lock up & Prison. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/lock_up/prison>.
Prison or Lock up. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/lock_up/prison.
Google Ngram Viewer shows how "lock up" and "prison" have occurred on timeline