53 entries under safe topic. ×

11
impregnable(adjective, strong, secure, resolute)
9
secure(adjective, intact, unbroken, protected)
8
immune(adjective, unaffected, unyielding, unbending)
8
protected(adjective, secure, perfect, unaffected)
8
unassailable(adjective, strong, sound, secure, resolute)
6
inviolable(adjective, secure, perfect, snug)
5
impervious(adjective, secure, unaffected, unyielding)
3
insusceptible(adjective, unaffected, protected, resistant)
3
unsusceptible(adjective, unaffected, protected, resistant)
2
exempt(adjective, unaffected, protected, resistant)
2
guarded(adjective, secure, perfect, snug)
2
resistant(adjective, strong, unaffected, unyielding)
2
safeguarded(adjective, secure, snug, intact)
2
sheltered(adjective, secure, snug, intact)
2
shielded(adjective, secure, perfect, snug)
2
unaffected(adjective, unyielding, unbending, protected)
1
buttoned up(expression, adjective, secure, snug)
1
cherished(adjective, secure, snug, intact)
1
free from danger(expression, idiom, secure, snug)
1
home-free(adjective, secure, snug, intact)
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APASmart Define. (2015). invulnerable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/invulnerable/thesaurus/synonyms
ChicagoSmart Define. 2015. "invulnerable thesaurus" https://smartdefine.org/invulnerable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, invulnerable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/invulnerable/thesaurus/synonyms>.
MLASmart Define. "invulnerable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/invulnerable/thesaurus/synonyms>