Intern
Intern verb - To put in or as if in prison.
Usage example: some Polish citizens were interned in Russian camps during World War II
Lock up is a synonym for intern in imprison topic. In some cases you can use "Lock up" instead a verb "Intern", when it comes to topics like action, incarcerate. popular alternative
Lock up
Lock up verb - To put in or as if in prison.
Usage example: if they catch you, they're going to lock you up and throw away the key!
Mutual synonyms
Cite this Source
Lock up and Intern. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/intern/lock_up
Intern & Lock up. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/intern/lock_up>.
Lock up or Intern. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/intern/lock_up.
Google Ngram Viewer shows how "intern" and "lock up" have occurred on timeline