63 entries under hollow topic. ×
| valley(noun, depression, impression, dip) | |
| well(hole, gap) | |
| womb(opening, void) |
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| APA | Smart Define. (2015). vacuum thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/vacuum/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "vacuum thesaurus" https://smartdefine.org/vacuum/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, vacuum thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/vacuum/thesaurus/synonyms>. |
| MLA | Smart Define. "vacuum thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/vacuum/thesaurus/synonyms> |