Synonyms|6Antonyms|0|Broader|0Narrower|0Related|0
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abysm
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bottomless gulf
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deep
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gaping void
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unfathomable cavity
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yawning chasm
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APASmart Define. (2011). impenetrable depth thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impenetrable_depth/thesaurus/synonyms
ChicagoSmart Define. 2011. "impenetrable depth thesaurus" https://smartdefine.org/impenetrable_depth/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2011, impenetrable depth thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impenetrable_depth/thesaurus/synonyms>.
MLASmart Define. "impenetrable depth thesaurus" 29 May 2011. Web. 22 September 2026. <https://smartdefine.org/impenetrable_depth/thesaurus/synonyms>