- Definitions|1
- Thesaurus|782
- Abbreviations|0
100 entries under solid topic. ×
| sound(adjective, calm, good, strong, secure) | |
| reliable(adjective, calm, good, strong, secure) | |
| secure(adjective, calm, good, strong, sound) | |
| stable(adjective, strong, sound, secure, tough) | |
| substantial(adjective, calm, good, strong, sound) | |
| set(adjective, calm, strong, steady) | |
| steady(adjective, calm, strong, sound, secure) | |
| sturdy(adjective, calm, strong, sound, secure) | |
| sure(adjective, calm, strong, reasonable, sensible) | |
| balanced(adjective, calm, strong, secure, easy) | |
| deep-rooted(adjective, calm, strong, steady) | |
| durable(adjective, calm, strong, sound, secure) | |
| fast(adjective, calm, strong, secure) | |
| stout(adjective, calm, strong, sound, secure) | |
| certain(adjective, strong, reasonable, easy, sensible) | |
| enduring(adjective, calm, strong, sound, secure) | |
| lasting(calm, strong, steady, substantial) | |
| powerful(adjective, good, strong, great, sound) | |
| safe(calm, strong, secure, steady) | |
| settled(adjective, strong, secure, easy) |
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| APA | Smart Define. (2016). well-founded thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/well-founded/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "well-founded thesaurus" https://smartdefine.org/well-founded/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, well-founded thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/well-founded/thesaurus/synonyms>. |
| MLA | Smart Define. "well-founded thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/well-founded/thesaurus/synonyms> |