| point | |
| pole(noun, beam, shaft, pillar, timber) | |
| post(noun, beam, shaft, pole, pillar) | |
| principle | |
| prop(noun, beam, shaft, pole, pillar) | |
| radical | |
| reach(noun, beam, shaft, pole, pillar) | |
| ridgepole(noun, beam) | |
| riprap | |
| rock bottom | |
| rudiment | |
| scaffold | |
| scaffolding(noun, beam, shaft, pole, pillar) | |
| scantling(noun, beam, shaft, letdown, pole) | |
| seat | |
| shaft(noun, beam, pole, pillar, timber) | |
| sole | |
| solid ground | |
| solid rock | |
| stanchion(noun, beam, shaft, pole, pillar) |
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| APA | Smart Define. (2015). sill thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sill/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "sill thesaurus" https://smartdefine.org/sill/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, sill thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sill/thesaurus/synonyms>. |
| MLA | Smart Define. "sill thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/sill/thesaurus/synonyms> |