20
prison(noun, free, residence, jail, prison)
17
pen(noun, free, informal, cell, jail)
13
lockup(noun, keep, free, informal, cell)
12
jail(noun, place, keep, run, free)
11
reformatory(noun, adjective, keep, pen, cell)
10
cage(noun, prison, enclosure)
7
slammer(noun, keep, free, slang, cell)
7
can(noun, keep, free, slang, informal)
7
penal institution(noun, expression, idiom, keep, facility)
7
clink(noun, keep, free, slang, cell)
7
house of correction(noun, expression, idiom, free, prison)
6
coop(noun, free, slang, prison, enclosure)
6
cooler(noun, keep, free, slang, cell)
6
brig(noun, free, prison)
6
dungeon(noun, keep, pen, cell, jail)
6
gaol(noun, prison)
6
keep(noun, free, pen, jail, prison)
6
big house(noun, expression, idiom, free, slang)
6
stockade(noun, keep, cell, jail, prison)
5
bridewell(noun, prison)
<1234510>
11 years ago|6.4k views|share |citing 
APASmart Define. (2015). Penitentiary thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/penitentiary/thesaurus/synonyms
ChicagoSmart Define. 2015. "Penitentiary thesaurus" https://smartdefine.org/penitentiary/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, Penitentiary thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/penitentiary/thesaurus/synonyms>.
MLASmart Define. "Penitentiary thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/penitentiary/thesaurus/synonyms>