157 entries under persistent topic. ×
| deep-seated(fixed, continuous, lasting, continuing) | |
| driven(adjective, firm, determined, serious, resolute) | |
| ever-present(fixed, continuous, lasting, continuing) | |
| hanging tough(expression, adjective, pitiless, unyielding) | |
| hard-as-nails(adjective, serious, resolute, pat) | |
| hard-headed(adjective, pitiless, unyielding, endless) | |
| hardboiled(adjective, serious, resolute, pat) | |
| inbred(fixed, continuous, lasting, continuing) | |
| ineradicable(adjective, fixed, continuous, lasting) | |
| intense(adjective, keen, firm, sensible, solid) | |
| intransigent(adjective, secure, steady, fixed) | |
| iron-fisted(adjective, pitiless, unyielding, endless) | |
| like the Rock of Gibralter(expression, adjective, idiom, fixed) | |
| mean business(expression, adjective, thoughtful, sober, serious) | |
| monochrome(adjective, fixed, continuous, endless) | |
| monophonic(adjective, fixed, continuous, endless) | |
| never-failing(adjective, clear, strong, flat, firm) | |
| neverending(adjective, resolute, living, continuous) | |
| obdurate(adjective, strong, secure, flat, certain) | |
| on ice(expression, adjective, serious, resolute) |
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| APA | Smart Define. (2016). constant thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/constant/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "constant thesaurus" https://smartdefine.org/constant/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, constant thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/constant/thesaurus/synonyms>. |
| MLA | Smart Define. "constant thesaurus" 12 February 2016. Web. 21 September 2026. <https://smartdefine.org/constant/thesaurus/synonyms> |