119 entries under defense topic. ×

2
glacis
2
mole
2
portcullis
2
resistance(noun, hindrance)
2
safety(noun, care, guard, shield, shelter)
2
scarp
2
stronghold(noun, fortification, barricade, wall)
2
support(noun, bar, fortification, barricade)
2
trench(noun, obstruction)
2
vallum
1
boom
1
answer
1
argument
1
armament(noun, care, guard, shield, resistance)
1
aversion
1
backfire
1
camouflage(noun, care, guard, shield, shelter)
1
certainty(noun, care, guard, shield, resistance)
1
concealment(noun, shield, partition, panel)
1
counterattack
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APASmart Define. (2015). barrier thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/barrier/thesaurus/synonyms
ChicagoSmart Define. 2015. "barrier thesaurus" https://smartdefine.org/barrier/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, barrier thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/barrier/thesaurus/synonyms>.
MLASmart Define. "barrier thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/barrier/thesaurus/synonyms>