7 entries under smooth topic. ×
| upright(noun, adjective, adverb, solid) | |
| perpendicular(noun, adjective, sharp, solid) | |
| erect(verb, adjective, sharp, solid) | |
| plumb(adjective, solid, level, true) | |
| sheer(adjective, sharp, solid, level) | |
| precipitous(adjective, right, sharp, solid) | |
| horizontal(adjective, solid, level, true) |
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| APA | Smart Define. (2016). vertical thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/vertical/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "vertical thesaurus" https://smartdefine.org/vertical/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, vertical thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/vertical/thesaurus/synonyms>. |
| MLA | Smart Define. "vertical thesaurus" 15 March 2016. Web. 21 September 2026. <https://smartdefine.org/vertical/thesaurus/synonyms> |