84 entries under noun topic. ×

24
citadel(support, place, structure, stronghold)
18
stronghold(support, place, cover, position)
14
fortress(support, place, cover, position)
12
bulwark(support, place, cover, position)
10
fortification(support, place, cover, position)
7
rampart(support, cover, position, guard)
6
redoubt(support, cover, position, top)
6
breastwork(support, place, defense, fortification)
6
castle(keep, top, defense, refuge)
6
defense(support, place, cover, guard)
6
fort(support, cover, position, guard)
5
fastness(cover, position, top, guard)
5
defence
5
resistance(cover, position, guard, shield)
4
parapet(support, place, cover, position)
4
aegis(cover, position, guard, shield)
4
barricade(cover, keep, position, guard)
4
garrison(cover, keep, position, guard)
3
barrier(support, protection, defense, fortification)
3
earthwork(keep, defense, fortification, barricade)
11 years ago|8.7k views|share |citing 
APASmart Define. (2015). bastion thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/bastion/thesaurus/synonyms
ChicagoSmart Define. 2015. "bastion thesaurus" https://smartdefine.org/bastion/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, bastion thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/bastion/thesaurus/synonyms>.
MLASmart Define. "bastion thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/bastion/thesaurus/synonyms>