26 entries under noun topic. ×

33
stronghold(fortress, keep, support, structure)
31
fortress(stronghold, keep, support, defense)
24
bastion(support, place, structure, stronghold)
24
castle(fortress, keep, defense, stronghold)
23
fort(stronghold, fortress, keep, defense)
21
tower(structure, building, place, keep)
20
fastness(structure, defense, stronghold, reinforcement)
15
fortification(fortress, keep, stronghold, support)
13
bulwark(support, fortification, reinforcement, fortress)
9
redoubt(fortification, stronghold, support, place)
7
refuge(keep, defense, stronghold, pillar)
7
donjon(hold, keep, defense, fortification)
7
garrison(cover, position, guard, shield)
6
chateau(hold, keep, fortification, cell)
4
alcazar(hold, keep, fortification, cell)
4
hold(obsolete, place, structure, safety)
2
barricade(cover, position, guard, shield)
2
bastille(cover, position, guard, shield)
2
jailhouse(fortification, cell, stronghold, presidio)
2
keep(structure, safety, tower)
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APASmart Define. (2015). citadel thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/citadel/thesaurus/synonyms
ChicagoSmart Define. 2015. "citadel thesaurus" https://smartdefine.org/citadel/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, citadel thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/citadel/thesaurus/synonyms>.
MLASmart Define. "citadel thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/citadel/thesaurus/synonyms>