89 entries under opening topic. ×

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nihility(void, hollow, emptiness, vacuum)
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nothingness(void, hollow, emptiness, vacuum)
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nullity(void, hollow, emptiness, vacuum)
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pretermission(noun, space, void, hollow)
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separation(noun, break, breach, hole)
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skip(void, hollow, gap, gulf)
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spout(breach, hole, gap)
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vacancy(void, hollow)
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womb(noun, space, void, pattern)
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APASmart Define. (2015). cavity thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/cavity/thesaurus/synonyms
ChicagoSmart Define. 2015. "cavity thesaurus" https://smartdefine.org/cavity/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, cavity thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/cavity/thesaurus/synonyms>.
MLASmart Define. "cavity thesaurus" 17 December 2015. Web. 26 September 2026. <https://smartdefine.org/cavity/thesaurus/synonyms>