75 entries under idiom topic. ×

6
house of correction(noun, expression, keep, free)
5
penal institution(noun, expression, facility, residence)
5
prison house(noun, expression)
3
black hole(noun, expression)
3
house of detention(noun, expression)
3
penal colony(noun, expression)
2
penal settlement
2
sponging house
1
break loose(expression, escape, liberation)
1
in prison
1
put behind bars(verb, expression, hold, sentence)
1
put on ice(verb, expression, hold, sentence)
1
slip the collar(expression, escape, liberation)
1
throw away the keys(verb, expression, hold, can)
1
throw in dungeon(verb, expression, hold, can)
1
throw the book at(verb, expression, hold, sentence)
1
up the river(noun, expression, keep, fortification)
0
acquire one's liberty(expression, liberation)
0
bread and butter(noun, expression, fortification, cell)
0
cast off trammels(expression, liberation)
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APASmart Define. (2015). prison thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/prison/thesaurus/synonyms
ChicagoSmart Define. 2015. "prison thesaurus" https://smartdefine.org/prison/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, prison thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/prison/thesaurus/synonyms>.
MLASmart Define. "prison thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/prison/thesaurus/synonyms>