102 entries under persistent topic. ×
| enduring(adjective, set, strong, flat, firm) | |
| ferocious(adjective, harsh, cruel, determined, fierce) | |
| fierce(adjective, harsh, cruel, determined) | |
| go for broke(expression, adjective, idiom, severe, honest) | |
| grim(adjective, harsh, cruel, determined, fierce) | |
| hang-tough(adjective, harsh, cruel, determined, fierce) | |
| hang in(expression, adjective, harsh, cruel, determined) | |
| hanging tough(expression, adjective, determined, vigorous, resolute) | |
| hard(adjective, harsh, cruel, determined, fierce) | |
| hard-headed(adjective, constant, pitiless, unyielding) | |
| harsh(adjective, cruel, determined, fierce) | |
| immobile(adjective, intense, cruel, resolute) | |
| immovable(adjective, strong, solid, cruel, determined) | |
| implacable(adjective, harsh, cruel, determined, fierce) | |
| incessant(adjective, determined, steady, resolute) | |
| inexorable(adjective, harsh, cruel, determined, fierce) | |
| inhuman(adjective, harsh, cruel, determined, fierce) | |
| insistent(adjective, set, firm, determined, steady) | |
| intense(adjective, set, deliberate, determined, deep) | |
| intransigent(adjective, strong, tough, firm, determined) |
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| APA | Smart Define. (2016). bound thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/bound/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "bound thesaurus" https://smartdefine.org/bound/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, bound thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/bound/thesaurus/synonyms>. |
| MLA | Smart Define. "bound thesaurus" 26 February 2016. Web. 20 September 2026. <https://smartdefine.org/bound/thesaurus/synonyms> |