116 entries under defense topic. ×

11
bastion(noun, support, place, cover, position)
10
bulwark(noun, support, cover, position, block)
10
citadel(noun, keep, stronghold, bulwark, support)
9
rampart(noun, support, cover, position, block)
7
barricade(noun, cover, position, block, bar)
7
castle(noun, keep, top, refuge)
7
stronghold(noun, support, hold, cover, keep)
6
barrier(noun, support, block, bar, guard)
6
fort(noun, support, hold, cover, keep)
5
battlement(noun, wall, embankment, reinforcement)
5
garrison(noun, cover, position, guard, shield)
5
munition
5
trench(noun, cover, position, limit, guard)
5
breastwork(noun, support, rock, cell)
4
fence(noun, cover, position, block, bar)
4
dike(noun, cover, position, guard, shield)
4
earthwork(noun, cell, stronghold, presidio)
4
escarp
4
fortress(noun, support, hold, cover, keep)
4
palisade(noun, cover, position, block, bar)
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APASmart Define. (2015). fortification thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fortification/thesaurus/synonyms
ChicagoSmart Define. 2015. "fortification thesaurus" https://smartdefine.org/fortification/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, fortification thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fortification/thesaurus/synonyms>.
MLASmart Define. "fortification thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/fortification/thesaurus/synonyms>