36 entries under secure topic. ×

14
unassailable(adjective, strong, resolute, safe)
12
invulnerable(adjective, strong, resolute, safe)
11
inviolable(adjective, safe, snug, intact)
7
safe(adjective, harm, unquestionable, snug)
4
protected(adjective, safe, snug, intact)
3
impervious(adjective, safe, snug, intact)
2
defended(adjective, safe, snug, intact)
2
guarded(adjective, safe, snug, intact)
2
safeguarded(adjective, safe, snug, intact)
2
shielded(adjective, safe, snug, intact)
1
buttoned up(expression, adjective, safe, snug)
1
cherished(adjective, safe, snug, intact)
1
free from danger(expression, idiom, safe, snug)
1
home-free(adjective, safe, snug, intact)
1
in safety(expression, adjective, safe, snug)
1
intact(adjective, safe, snug, sheltered)
1
maintained(adjective, safe, snug, intact)
1
okay(adjective, safe, snug, intact)
1
out of danger(expression, idiom, safe, snug)
1
preserved(adjective, safe, snug, intact)
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APASmart Define. (2015). impregnable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/impregnable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impregnable thesaurus" https://smartdefine.org/impregnable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, impregnable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/impregnable/thesaurus/synonyms>.
MLASmart Define. "impregnable thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/impregnable/thesaurus/synonyms>