39 entries under protected topic. ×

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buttoned down(expression, adjective, strong, solid, stable)
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childproof
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defended(adjective, firm, safe, sheltered)
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guarded(adjective, firm, safe, sheltered)
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immune(adjective, safe, sheltered)
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impregnable(adjective, safe, sheltered)
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inaccessible(adjective, tamper-proof)
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iron(adjective, strong, solid, stable, sure)
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riskless(adjective, safe, sheltered)
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safe(adjective, sheltered)
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safe as houses(expression, adjective, idiom, safe, sheltered)
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sheltered(adjective, safe)
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shielded(adjective, safe, sheltered)
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solid as a rock(expression, adjective, idiom, strong, solid)
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staunch(adjective, strong, solid, stable, sure)
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sure(adjective, strong, solid, stable, safe)
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unassailable(adjective, sound, firm, safe, sheltered)
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undamaged(adjective, safe, sheltered)
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unharmed(adjective, safe, sheltered)
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APASmart Define. (2013). locked thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/locked/thesaurus/synonyms
ChicagoSmart Define. 2013. "locked thesaurus" https://smartdefine.org/locked/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2013, locked thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/locked/thesaurus/synonyms>.
MLASmart Define. "locked thesaurus" 27 June 2013. Web. 25 September 2026. <https://smartdefine.org/locked/thesaurus/synonyms>