Synonyms|289Antonyms|101|Broader|6Narrower|0Related|320
1
dissipated
1
dissolute
1
dominating
1
enunciate
1
fertilizable
1
fixed(adjective, firm, true, steady, resolute)
1
formidable(adjective, horrible, terrifying)
1
free from danger(expression, idiom, secure, safe, snug)
1
heavy
1
home-free(adjective, secure, safe, snug, intact)
1
immortal
1
impassable
1
imperishable
1
impregnability
1
in safety(expression, adjective, secure, safe, snug)
1
incorruptible
1
ineffaceable
1
ineradicable
1
infrangible
1
intact(adjective, secure, safe, snug, sheltered)
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APASmart Define. (2015). impregnable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impregnable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impregnable thesaurus" https://smartdefine.org/impregnable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, impregnable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impregnable/thesaurus/synonyms>.
MLASmart Define. "impregnable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/impregnable/thesaurus/synonyms>