Synonyms|240Antonyms|60|Broader|3Narrower|0Related|453
2
undefeatable
2
unkillable
2
unstoppable
2
unyielding(strong, resolute, unbending, permanent, unreceptive)
1
air-tight
1
armed
1
bombproof
1
buttoned up(expression, adjective, secure, safe, snug)
1
cherished(adjective, secure, safe, snug, intact)
1
cloaked
1
copyrighted
1
covered
1
deathless
1
defendable
1
dependable
1
entrenched
1
fail-safe
1
formidable
1
free from danger(expression, idiom, secure, safe, snug)
1
guaranteed
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APASmart Define. (2015). invulnerable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/invulnerable/thesaurus/synonyms
ChicagoSmart Define. 2015. "invulnerable thesaurus" https://smartdefine.org/invulnerable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, invulnerable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/invulnerable/thesaurus/synonyms>.
MLASmart Define. "invulnerable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/invulnerable/thesaurus/synonyms>