Synonyms|24Antonyms|0|Broader|0Narrower|0Related|2
1
penal institution(noun, expression, pen, prison, lockup)
1
up the river(noun, expression, idiom, pen, prison)
0
G(noun, pen, reformatory, penitentiary)
0
bastille(noun, pen, prison, lockup, reformatory)
0
can(noun, pen, prison, lockup, reformatory)
0
clink(noun, pen, prison, lockup, reformatory)
0
confinement(noun, pen, reformatory, penitentiary)
0
cooler(noun, pen, prison, lockup, reformatory)
0
detention center(noun, pen, reformatory, penitentiary)
0
dungeon(noun, pen, prison, lockup, reformatory)
0
guardhouse(noun, pen, reformatory, penitentiary)
0
jail(noun, pen, prison, lockup, reformatory)
0
keep(noun, pen, reformatory, penitentiary)
0
lockup(noun, pen, prison, reformatory, penitentiary)
0
pen(noun, prison, lockup, reformatory, penitentiary)
0
penal complex(noun, pen, reformatory, penitentiary)
0
penitentiary(noun, pen, prison, lockup, reformatory)
0
pokey(noun, pen, reformatory, penitentiary)
0
poky
0
reformatory(noun, pen, prison, lockup, penitentiary)
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APASmart Define. (2013). secure unit thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/secure_unit/thesaurus/synonyms
ChicagoSmart Define. 2013. "secure unit thesaurus" https://smartdefine.org/secure_unit/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, secure unit thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/secure_unit/thesaurus/synonyms>.
MLASmart Define. "secure unit thesaurus" 18 May 2013. Web. 20 September 2026. <https://smartdefine.org/secure_unit/thesaurus/synonyms>