- Definitions|2
- Thesaurus|729
- Abbreviations|0
196 entries under adjective topic. ×
| determined(good, strong, firm, honest) | |
| firm(good, set, clear, strong) | |
| secure(open, solid, certain, true) | |
| unceasing(strong, continue, firm, determined) | |
| assiduous(certain, unchanging) | |
| ceaseless(continue, certain, unchanging) | |
| continuing(strong, firm, certain, determined) | |
| diligent(certain, unchanging) | |
| endless(continue, certain, steady, constant) | |
| persevering(set, strong, firm, energetic) | |
| pertinacious(strong, firm, determined, steady) | |
| relentless | |
| solid(good, strong, open, certain) | |
| sound(strong, solid, steady, consistent) | |
| tenacious(strong, firm, determined, steady) | |
| uninterrupted | |
| unrelenting(certain, unchanging) | |
| unvarying(certain, steady, regular, definite) | |
| weariless(continue, tired, tireless) | |
| accurate(open, honest, sensible, reliable) |
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| APA | Smart Define. (2016). unfailing thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unfailing/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unfailing thesaurus" https://smartdefine.org/unfailing/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, unfailing thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unfailing/thesaurus/synonyms>. |
| MLA | Smart Define. "unfailing thesaurus" 3 March 2016. Web. 29 September 2026. <https://smartdefine.org/unfailing/thesaurus/synonyms> |