- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
168 entries under solid topic. ×
| unchanging(adjective, close, correct, firm, honest) | |
| abiding(adjective, calm, strong, complete, secure) | |
| unchangeable(adjective, calm, strong, secure, flat) | |
| undeviating(adjective, strong, flat, firm) | |
| changeless(adjective, firm, certain, steady) | |
| immutable(adjective, calm, strong, secure, firm) | |
| single-minded(adjective, keen, firm, sensible) | |
| tough(adjective, calm, clear, strong, severe) | |
| stalwart(adjective, calm, strong, tough, keen) | |
| trustworthy(adjective, good, close, strong, correct) | |
| trusty(adjective, good, close, strong, correct) | |
| unfailing(adjective, good, strong, honest) | |
| definite(adjective, good, strong, complete, easy) | |
| secure(verb, adjective, calm, strong, firm) | |
| sturdy(adjective, calm, strong, tough, firm) | |
| true-blue(adjective, good, close, strong, kind) | |
| ardent(adjective, close, kind, correct, keen) | |
| certain(adjective, good, strong, complete, easy) | |
| decisive(adjective, good, strong, honest) | |
| liege(adjective, continue, firm, honest, sensible) |
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| APA | Smart Define. (2016). steadfast thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/steadfast/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "steadfast thesaurus" https://smartdefine.org/steadfast/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, steadfast thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/steadfast/thesaurus/synonyms>. |
| MLA | Smart Define. "steadfast thesaurus" 11 March 2016. Web. 21 September 2026. <https://smartdefine.org/steadfast/thesaurus/synonyms> |