| bone(noun, back, backbone) | |
| chine(noun, back, point, range, fold) | |
| guts(noun, drive, strength, energy, resolve) | |
| mainstay(noun, support, prop, backbone) | |
| projection(noun, bulge, overhang) | |
| spear(noun, needle) | |
| spicule | |
| spiculum(sharpness, spike) | |
| spikelet | |
| pluck(noun, drive, strength, energy, resolve) | |
| book | |
| bramble | |
| brier | |
| linchpin(noun, support, prop, backbone) | |
| moxie(noun, strength, resolve, determination, firmness) | |
| nerve(noun, drive, strength, energy, resolve) | |
| sand(noun, resolve, courage, nerve, boldness) | |
| support(foundation, prop, backbone) | |
| thistle | |
| tine(noun, top, point, head, spur) |
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| APA | Smart Define. (2015). spine thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/spine/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spine thesaurus" https://smartdefine.org/spine/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, spine thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/spine/thesaurus/synonyms>. |
| MLA | Smart Define. "spine thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/spine/thesaurus/synonyms> |