Synonyms|102Antonyms|0|Broader|0Narrower|0Related|40
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concentration
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coverts
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defence
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defense
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defensive structure(expression, idiom)
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dungeons
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durability
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enclosures
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endurance
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escapes
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exits
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expedients
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fastness
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firmness
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fixity
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fortalice
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fortification
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fortifies
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hardness
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havens
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APASmart Define. (2013). fortresses thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/fortresses/thesaurus/synonyms
ChicagoSmart Define. 2013. "fortresses thesaurus" https://smartdefine.org/fortresses/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2013, fortresses thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/fortresses/thesaurus/synonyms>.
MLASmart Define. "fortresses thesaurus" 17 June 2013. Web. 27 September 2026. <https://smartdefine.org/fortresses/thesaurus/synonyms>