71 entries under tough topic. ×
| firm(noun, adjective, feature, state, characteristic) | |
| strong(adjective, strain, flat, firm) | |
| stable(adjective, strong, strain, flat) | |
| constant(adjective, strong, continue, strain) | |
| steadfast(adjective, feature, state, characteristic, strong) | |
| enduring(adjective, quiet, strong, continue) | |
| lasting(adjective, strong, continue, strain) | |
| permanent(adjective, strong, continue, strain) | |
| unyielding(adjective, strong, strain, flat) | |
| fast(adjective, strong, strain, firm) | |
| stubborn(adjective, characteristic, quality, stubbornness, determined) | |
| tenacious(adjective, strong, flat, firm) | |
| persevering(adjective, quiet, understanding, strong) | |
| determined(adjective, strong, flat, firm) | |
| resolute(adjective, strong, flat, firm) | |
| relentless(adjective, strong, severe, continue) | |
| dogged(adjective, strong, firm, energetic) | |
| pertinacious(adjective, strong, continue, firm) | |
| obstinate(adjective, strong, continue, firm) | |
| unrelenting(adjective, firm, certain, determined) |
For more, visit
Persistent on
Power Thesaurus
| APA | Smart Define. (2015). persistent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/persistent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "persistent thesaurus" https://smartdefine.org/persistent/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, persistent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/persistent/thesaurus/synonyms>. |
| MLA | Smart Define. "persistent thesaurus" 1 June 2015. Web. 21 September 2026. <https://smartdefine.org/persistent/thesaurus/synonyms> |