200 entries under solid topic. ×
| hardy(adjective, strong, sound, tough) | |
| hearty(adjective, strong, sound, complete, tough) | |
| motionless(adjective, calm, dull, quiet, strong) | |
| poised(adjective, calm, quiet, easy, firm) | |
| sensible(adjective, sound, reasonable, moderate, firm) | |
| tenacious(adjective, strong, sound, secure, tough) | |
| unswerving(adjective, firm, fixed, resolute) | |
| vigorous(adjective, strong, sound, complete, tough) | |
| well-founded(adjective, strong, sound, secure, tough) | |
| cool(adjective, calm, quiet, sound, reasonable) | |
| dense(adjective, close, strong, hard, firm) | |
| hale(adjective, strong, sound, complete, tough) | |
| imperturbable(adjective, calm, smooth, firm) | |
| intact(complete, clean, pure, vigorous) | |
| predictable(adjective, good, strong, honest) | |
| sober(adjective, calm, quiet, sound, reasonable) | |
| unfaltering(adjective, firm, steady, regular) | |
| vital(adjective, strong, complete, vigorous) | |
| well-built(adjective, strong, sound, tough, firm) | |
| able-bodied(adjective, strong, sound, tough) |
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| APA | Smart Define. (2015). stable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, stable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>. |
| MLA | Smart Define. "stable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms> |