Synonyms|145Antonyms|65|Broader|0Narrower|0Related|377

93 entries under adjective topic. ×

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bulletproof
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confidential
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dependable
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good
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heavy
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impregnable
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infrangible
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invincible
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inviolable
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invulnerable
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irrefutable
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leakproof
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solid
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APASmart Define. (2015). unobtainable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unobtainable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unobtainable thesaurus" https://smartdefine.org/unobtainable/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unobtainable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unobtainable/thesaurus/synonyms>.
MLASmart Define. "unobtainable thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unobtainable/thesaurus/synonyms>