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Penitentiary has 91 synonyms. The top synonyms for penitentiary are keep, pen, lockup, reformatory, stockade, bastille, guardhouse, tollbooth and 83 more. Another word for penitentiary is keep. Browse the full list below.
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| Random | DefinitionA common synonym for penitentiary is keep. Other synonyms include pen, lockup, reformatory, stockade.
Penitentiary has 91 synonyms listed on Thesaurasize.
(n): a state or federal prison for convicted felons; (Roman Catholic Church) A priest who administers the sacrament of penance (adj): of, or related to penance; penitential; of, or relating to the pun
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