| caldera(noun, pit) | |
| caser | |
| cavern | |
| chester | |
| crevice(noun, hole, perforation, orifice, grommet) | |
| ditch(noun, well, hole, hollow) | |
| fissure(noun, break, cut, crack, space) | |
| gap(noun, break, cut, crack, space) | |
| mouth(noun, pit) | |
| notch(depression, hollow, scrape, indentation, chip) | |
| opening(noun, space, void, hole, hollow) | |
| recess(noun, cup, indentation, cavity) | |
| scoop(noun, break, cut, crack, depression) | |
| scratch(mark, depression, blemish, hollow, scrape) | |
| sink(noun, depression, impression, dip, hollow) | |
| sinus(noun, space, hole, hollow, pocket) | |
| split | |
| valley(noun, depression, impression, dip, hollow) | |
| vent(noun, break, cut, crack, opening) | |
| alveolation |
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| APA | Smart Define. (2015). crater thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/crater/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "crater thesaurus" https://smartdefine.org/crater/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, crater thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/crater/thesaurus/synonyms>. |
| MLA | Smart Define. "crater thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/crater/thesaurus/synonyms> |