| buffer | |
| buffet(noun, support, protection, fortification, embankment) | |
| castellation | |
| château(noun, stronghold, fortress, fort) | |
| cockpit | |
| core | |
| cover(noun, position, guard, shield, resistance) | |
| defence ordefense | |
| defensive tower | |
| defilade | |
| deterrence(noun, cover, position, guard, shield) | |
| dugout | |
| elevation(fortification, wall, embankment, bulwark, rampart) | |
| embattlement | |
| estate house(noun, expression, stronghold, fortress, fort) | |
| fort-alice | |
| fort-elage | |
| fortified place | |
| fortressed | |
| fortresses |
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| APA | Smart Define. (2015). bastion thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/bastion/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "bastion thesaurus" https://smartdefine.org/bastion/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, bastion thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/bastion/thesaurus/synonyms>. |
| MLA | Smart Define. "bastion thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/bastion/thesaurus/synonyms> |