Synonyms|40Antonyms|6|Broader|1Narrower|2Related|30

18 entries under noun topic. ×

4
invulnerability
4
safety(protection, safety)
2
invincibility
1
security
1
surety
0
excellence
0
force
0
immunity
0
inaccessibility
0
intensity
0
solidity
0
spirit
0
strength
0
stronghold
0
support
0
validity
0
vigor
0
virtue
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APASmart Define. (2015). impregnability thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impregnability/thesaurus/synonyms
ChicagoSmart Define. 2015. "impregnability thesaurus" https://smartdefine.org/impregnability/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, impregnability thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impregnability/thesaurus/synonyms>.
MLASmart Define. "impregnability thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/impregnability/thesaurus/synonyms>