Synonyms|298Antonyms|6|Broader|6Narrower|8Related|121
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constant
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continual
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continuing
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continuous
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correction
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custody
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damn
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darned
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defence
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defensive structure(expression, idiom)
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defilade
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detention
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deterrence(noun, cover, position, guard, shield)
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deuced
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develop
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dike(noun, cover, position, guard, shield)
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elevation
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embattlement
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encampment(noun, quarters, barracks)
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encircle
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APASmart Define. (2015). fortress thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/fortress/thesaurus/synonyms
ChicagoSmart Define. 2015. "fortress thesaurus" https://smartdefine.org/fortress/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, fortress thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/fortress/thesaurus/synonyms>.
MLASmart Define. "fortress thesaurus" 15 May 2015. Web. 29 September 2026. <https://smartdefine.org/fortress/thesaurus/synonyms>