101 entries under persistent topic. ×
| hard-headed(adjective, constant, pitiless, unyielding) | |
| inborn(fixed, lasting, continuing, remaining) | |
| inbred(fixed, lasting, continuing, remaining) | |
| incurable(fixed, lasting, continuing, remaining) | |
| ineradicable(fixed, lasting, continuing, remaining) | |
| ingrained(fixed, lasting, continuing, remaining) | |
| intransigent(adjective, constant, pitiless, unyielding) | |
| inveterate(fixed, lasting, continuing, remaining) | |
| iron-fisted(adjective, constant, pitiless, unyielding) | |
| lifelong(adjective, fixed, lasting, continuing) | |
| lingering(fixed, lasting, remaining, chronic) | |
| merciless(adjective, constant, pitiless, unyielding) | |
| neverending(adjective, constant, unyielding, endless) | |
| obstinate(firm, unyielding, unrelenting, lasting) | |
| protracted(endless, lasting, infinite, boundless) | |
| remorseless(adjective, constant, pitiless, unyielding) | |
| stabile(adjective, direct, smooth, right, flat) | |
| stiff-necked(adjective, constant, pitiless, unyielding) | |
| tenacious(adjective, constant, pitiless, unyielding) | |
| unabated(adjective, constant, pitiless, unyielding) |
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| APA | Smart Define. (2015). continuous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/continuous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "continuous thesaurus" https://smartdefine.org/continuous/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, continuous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/continuous/thesaurus/synonyms>. |
| MLA | Smart Define. "continuous thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/continuous/thesaurus/synonyms> |