4 entries under solid topic. ×
| depression(noun, valley) | |
| cavity | |
| pocket(noun, cavity, pouch) | |
| sinkhole |
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| APA | Smart Define. (2016). mountain thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/mountain/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "mountain thesaurus" https://smartdefine.org/mountain/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, mountain thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/mountain/thesaurus/antonyms>. |
| MLA | Smart Define. "mountain thesaurus" 1 March 2016. Web. 23 September 2026. <https://smartdefine.org/mountain/thesaurus/antonyms> |