7
jug(noun, free, slang, prison)
7
pencil(noun, verb, mark, note, create)
7
slammer(noun, free, slang)
7
stir(noun, free, slang)
7
writing instrument(noun, expression, idiom, thing)
6
shut up(verb, phrasal verb, keep, free, restraint)
6
dungeon(noun, keep, field, container, cell)
6
engross(verb, mark, note, create, sign)
6
envelop(verb, restrain, hide, restrict, round)
6
mew(verb, free, restrict, circle, confine)
6
reformatory(noun, keep, cell, jail, prison)
6
stockade(noun, hold, curb, field, commit)
5
gaol(noun, prison)
5
lockup(noun, free, informal, prison)
5
arena(noun, field, arena, corral, stockade)
5
bastille(noun, hold, curb, commit, confine)
5
cote(noun, abode)
5
courtyard(noun, field, arena, corral, stockade)
5
encompass(verb, support, secure, restrict, round)
5
field(noun, arena, corral, stockade)
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APASmart Define. (2015). pen thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/pen/thesaurus/synonyms
ChicagoSmart Define. 2015. "pen thesaurus" https://smartdefine.org/pen/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, pen thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/pen/thesaurus/synonyms>.
MLASmart Define. "pen thesaurus" 7 October 2015. Web. 22 September 2026. <https://smartdefine.org/pen/thesaurus/synonyms>