- Definitions|0
- Thesaurus|55
- Abbreviations|0
| smooth(adjective, calm, flat, plain, level) | |
| stable(adjective, calm, smooth, flat, plain) | |
| steady(adjective, calm, smooth, flat, plain) | |
| straight(adjective, calm, smooth, flat, plain) | |
| trim(adjective, calm, smooth, flat, plain) | |
| trimmed(adjective, calm, smooth, flat, plain) | |
| unbroken(adjective, calm, smooth, flat, plain) | |
| unfluctuating(adjective, calm, smooth, flat, plain) | |
| uniform(adjective, calm, smooth, flat, plain) | |
| uninterrupted(adjective, calm, smooth, flat, plain) | |
| dead flat(expression, adjective, smooth, flat, even) | |
| flat as a pancake(expression, adjective, idiom, smooth, flat) |
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| APA | Smart Define. (2011). on one plane thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/on_one_plane/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "on one plane thesaurus" https://smartdefine.org/on_one_plane/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2011, on one plane thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/on_one_plane/thesaurus/synonyms>. |
| MLA | Smart Define. "on one plane thesaurus" 23 May 2011. Web. 27 September 2026. <https://smartdefine.org/on_one_plane/thesaurus/synonyms> |