26
fortress(noun, place, keep, defense, building)
22
palace(noun, place, house, space, home)
17
citadel(noun, keep, defense, building, stronghold)
17
mansion(noun, place, house, home, box)
16
tower(noun, place, part, keep, abode)
16
fort(noun, place, keep, defense, building)
10
château(noun, place, house, abode, building)
9
manor(noun, place, house, shelter, building)
8
stronghold(noun, keep, defense, building, refuge)
6
rook(noun, piece)
5
bastion(noun, place, defense, building, construction)
5
hold(noun, defense, stronghold, fortress, fort)
5
keep(noun, defense, refuge, fortification, cell)
5
court(noun, train, abode, staff, attendants)
5
fastness(noun, defense, refuge, fortification, stronghold)
5
fortification(noun, keep, top, defense, building)
5
hall(noun, train, abode, staff, mansion)
5
residence(noun, place, house, space, home)
4
donjon(noun, place, defense, building, construction)
4
villa(noun, place, house, shelter, abode)
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APASmart Define. (2015). castle thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/castle/thesaurus/synonyms
ChicagoSmart Define. 2015. "castle thesaurus" https://smartdefine.org/castle/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, castle thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/castle/thesaurus/synonyms>.
MLASmart Define. "castle thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/castle/thesaurus/synonyms>