162 entries under solid topic. ×
| definite(adjective, clear, strong, sound, easy) | |
| determined(adjective, clear, strong, easy, firm) | |
| durable(adjective, calm, strong, secure, tough) | |
| fast(adjective, calm, close, strong, secure) | |
| strong(adjective, calm, sound, tough, reasonable) | |
| tried and true(expression, adjective, idiom, close, strong) | |
| well-founded(adjective, calm, good, strong, secure) | |
| resolute(adjective, calm, close, strong, secure) | |
| tough(adjective, calm, strong, secure, firm) | |
| tried-and-true(adjective, good, sensible, fair) | |
| trustable(open, honest, sensible, accurate) | |
| unswerving(adjective, close, correct, firm, honest) | |
| absolute(adjective, clear, strong, easy, firm) | |
| assured(adjective, strong, easy, firm) | |
| balanced(adjective, calm, strong, secure, easy) | |
| cogent(adjective, good, reasonable, sensible) | |
| conclusive(adjective, clear, strong, reasonable, easy) | |
| exact(adjective, good, close, open, correct) | |
| plausible(open, sound, reasonable, honest, sensible) | |
| precise(adjective, good, close, open, correct) |
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| APA | Smart Define. (2016). reliable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/reliable/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "reliable thesaurus" https://smartdefine.org/reliable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, reliable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/reliable/thesaurus/synonyms>. |
| MLA | Smart Define. "reliable thesaurus" 3 March 2016. Web. 22 September 2026. <https://smartdefine.org/reliable/thesaurus/synonyms> |