95 entries under fortification topic. ×

24
citadel(noun, keep, support, structure, defense)
20
fortress(noun, support, hold, cover, keep)
15
fastness(noun, hold, cover, keep, position)
13
keep(noun, hold, defense, refuge)
10
bulwark(noun, support, cover, position, guard)
9
bastion(noun, support, place, cover, position)
8
castle(noun, keep, defense, refuge)
8
cell(noun, presidio, prison, sustainment)
8
fort(noun, hold, cover, keep, position)
8
garrison(noun, cover, position, guard, shield)
7
defense(noun, support, cover, guard, resistance)
7
donjon(noun, hold, keep, defense)
7
tower(noun, hold, part, keep, top)
6
redoubt(noun, support, cover, position, top)
6
security(noun, support, cover, position, guard)
5
blockhouse(noun, top, defense, cell)
5
prison(noun, cell, presidio, prison)
5
rampart(noun, support, cover, position, guard)
3
barricade(noun, cover, position, guard, shield)
3
guard(noun, support, cover, position, shield)
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APASmart Define. (2015). stronghold thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/stronghold/thesaurus/synonyms
ChicagoSmart Define. 2015. "stronghold thesaurus" https://smartdefine.org/stronghold/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, stronghold thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/stronghold/thesaurus/synonyms>.
MLASmart Define. "stronghold thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/stronghold/thesaurus/synonyms>